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SIGMA - Symmetry, Integrability and Geometry : Methods and Applications2395 (ISSN : 1815-0659)Published by National Academy of Science of Ukrainehttp://www.emis.de/journals/SIGMA/SHERPA/RoMEO
SIGMA - Symmetry, Integrability and Geometry : Methods and Applications2395 (ISSN : 1815-0659)Published by National Academy of Science of Ukrainehttp://www.emis.de/journals/SIGMA/SHERPA/RoMEO