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CDS CERN Document Server;
KISS preprint database in Japan;
electronic versions of journals;
Physics of Elementary Particles and Atomic Nuclei (in Russian);
Mathematical Physics Archive, University of Geneva;
Preprints Archive, Joint Institute for Nuclear Research, Dubna;
Scientific Publications, International Center for Theoretical Physics, Trieste;
Preprints Archive, Institute for High Energy Physics, Serpukhov;
Mathematical Physics Preprints Archive, ;
Project Euclid, Mathematical journals;

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