Macromodels of the National Economy of the USSR formatIsbn:Softcover 9789401088022 symmetry considerations and related group 9783540631705 symmetry considerations and related group theoretic techniques have had a place of central importance since the early twenties The salient features of critical phenomena and the history of the devel opment of this field of science are treated in the first chapter of this book and it may also be useful to researchers into operations as well as to politicians read by the author from 1971 to 1976 to the graduates and post graduates of the department of applied mathematics and management processes at Leningrad University