01176nam a2200337 i 450099100096246970753620020507180651.0940526s1982 us ||| | eng 0125316801b1078181x-39ule_instLE01304947ExLDip.to Matematicaeng515.35AMS 22-XXAMS 34-02AMS 34-XXQA371.08713Ovsiannikov, L. V.535607Group analysis of differential equations /L. V. Ovsiannikov ; translation edited by W. F. AmesNew York :Academic Press,1982xvi, 416 p. ;24 cm.Includes bibliographical references and indexDifferential equationsTransformation groupsAmes, William F..b1078181x21-09-0628-06-02991000962469707536LE013 34-XX OVS11 (1982)12013000003580le013-E0.00-l- 04640.i1088146328-06-02Group analysis of differential equations921946UNISALENTOle01301-01-94ma -engus 01