Author or co-author of some 20 papers published in professional journals, including:

• Elastic Storage in Aquifers. J. of Hydrology (The Netherlands) 17, pp.331-351. 1972.
• Well Losses due to Reduced Permeability around Well Screen. Ground Water, vol.10,1972.
• Optimum Discharge from Large-diameter Wells. Ground Water, vol.13, 1975.
• Mathematical Model of Uluova Plain, Turkey - a training and management tool (with M.Altunkaynak and G.Ovul). Ground Water, vol.15, 1977.
• Karstic spring recession hydrograph and water temperature analysis: Oymapinar Dam Project, Turkey (with A.Altug). J.of Hydrology (The Netherlands), 45, 1980.
• Dumanli Spring, Turkey - the largest karstic spring in the world? (with G.Gunay). J.of Hydrology (The Netherlands), 45, 1980.
• Development of Karst Water Resources in Turkey with Emphasis on Groundwater (with G.Gunay). Natural Resources Forum (U.N.), vol.4, 1980.
• United Nations Ground Water Software. Ground Water, vol.31, 1993.
• Ground Water for Windows - A New Ground-Water Information System Software. Ground Water Journal, Vo.32, No.6, pp.1022-1028. November-December 1994.

Author or co-author of some 25 papers presented at congresses, symposia, and international meetings:

• Ground Water Resources Development Assisted by Computer - Case Study: Mesa de Guanipa Project, Venezuela. 2nd World Congress on Water Resources, New Delhi, India, IWRA, 1975.
• Borehole Logging in Ground Water Investigations. Invited paper (with M.Boreli) for a symposium by IAHR, Rapersville, Switzerland, 1975.
• Conjunctive Use of Surface and Ground Water - Case Study: Wadi Caam Project, Libya. 2nd Symposium on Water Resources Planning, Palermo, Italy, 1975.
• Artificial Recharge of Karst Aquifer. Symposium on Karst Hydrogeology. Oymapinar, Turkey, 1977.
• Recession Hydrograph Analysis in Karst Aquifers. Symposium on Karst Hydrogeology. Oymapinar, Turkey, 1977.
• Ground Water Resource Development and Management Assisted by a Microcomputer - The Bermuda Case (with N.Thomas and J.Thomson). Fifth International Conference on Water Resources Planning and Management, Athens, Greece. 1984.
• Use of Microcomputers in Water Resources. Invited presentation at International Seminar on Computers in Water Resources (UNDP), Kisumu, Kenya, 1983, about 100 pp.
• Water Resources Management under Drought Conditions. Rautahat District, Nepal. International Symposium on Water Resources Management in Drought-prone Countries, New Delhi, India, 1989.
• Ground Water for Windows - The New Software for Ground Water Information Systems. Nile 2002 Conference, Aswan, Egypt, February 1993.
• Ground Water for Windows - The New Software for Ground Water Information Systems. In Proceedings: International Symposium on Remote Sensing and GIS for Site Characterization - Applications and Standards. ASTM. San Francisco, January 1994.
• Ground Water Information System of Bahrain. In Proceedings: The Second Gulf Water Conference. Bahrain, November 1994.
• Ground Water Information System Uploaded to the Internet. Case Study: Rio Minho Basin, Jamaica. In Proceedings: 3rd Water Information Summit, Miami, Inter-American Water Resources Network. November 2000.
• Ground Water Information Systems as Decision-Making Tools. Case Study: Jamaica and Trinidad & Tobago. St.Lucia, October 2002. 1st Environmental Forum Conference.
• Leaky Underground Storage Tanks (LUST): Simulating Fate of Benzene and Other Contaminants in Ground Water Systems. Case Studies from SE USA. Kingston, October 2002. Environmental Management and Regulation of Petroleum Storage Facilities Conference.

Author of more than 150 technical reports from various projects. Some examples are given below.

• 15 technical reports for the U.N. project in Nepal "Shallow Aquifer Explorations in Terai;"
• 10 technical reports in the U.N. project in Turkey "Strengthening DSI Groundwater Investigation Capabilities;"
• 5 technical reports for the UN project "Recharge to Northern Plain in China."
• 10 technical reports on ground water and for National Water Master Plan of Jordan;
• 6 technical reports for the project "Ground Water Assessment Abu Dhabi,"
• Report on "Artificial Recharge Scheme Wadi Caam, Libya;"
• Report on Hydrogeology of Wadi Safwajjin, Libya; and many more.

More recent technical reports are from Afghanistan (2005), Bahrain, Libya, Palestine, the Dominican Republic (2002), Abu Dhabi Emirate, Jordan, Jamaica (GWIS of Rio Minho and Black River basins, Math. Model of Essex Valley Karstic Limestone System), Macedonia (2006, Ground water monitoring system in Gevgelia Plain and around Dojran Lake), Bulgaria (2007, Baseline Analyses Report, Dobrudja/Dobrogea).

Author of User Manual for the United Nations Ground Water software, version one and version two (Ground Water for Windows), and various training tutorials and course notes.

Writer of the "Regional Programme for Development and Utilization of the Nubian Sandstone Aquifer." CEDARE (Cairo) and IFAD/UN (Rome), September 1995.

Various reports on modeling ground water flow and solute transport. Among others:

• Mathematical Model of Ground Water Flow and Solute Transport at Coca-Cola Site, Waycross, Georgia, April 1997.
• Mathematical Model of Ground Water System of the Wadi Ham Aquifer, Fujayrah Emirate, United Arab Emirates. May 1996.
• Groundwater Model of Bermuda. 1986.
• Models of Rautahat, Nawalparasi, Kapilvastu, and Sunsari districts in Nepal. 1987-89.
• Galmoy Mine, Ireland, various models of ground water system or mine dewatering. 1992-94.
• About ten models of different ground water systems in Venezuela: Rio Guarico, Mesa de Guanipa, Turen, Estado Zulia-Maracaibo, Oritupano, etc. 1972-1989.
• Author of a consulting report prepared for International Resources Group Ltd., Washington, DC, for a USAID project: Availability of Ground Water in the Dominican Republic - A Re-assessment Study. Sto Domingo, November 2002.