‎CHAPLYGIN (S.A.)‎
‎Noviy metod priblizhennogo integrirovaniya differentysialnykh uravneniy [in Cyrillic] - (A NEW METHOD OF THE APPROXIMATE INTERGRATION DIFFERENTIAL EQUATIONS) -- EDITION ORIGINALE‎

‎Moscou & Leningrad, 1932; un volume in 8, broché, couverture imprimée, 52pp.‎

Reference : 1162

‎---- EDITION ORIGINALE ---- RARE ---- "This Russian mathematician and physicist graduated from the University of Moscow, later teaching mathematics there on the recommendation of Zukovsky. Interested in classical mechanics, especially the mechanics of liquids and gases, Chaplygin continued the work of St. Venant on jet streams and contributed to aerodynamics through his studies of wing cross section. Chaplygin's works also enriched mathematics : his studies of methods of approximation for solving differential equations are achievements of mathematical thought". (DSB III pp. 194/197 et Bibliotheca Mechanica p. 69) - N° 21**1162/Cart‎