Differential equations: qualitative theory/ edited by B. Sz.-Nagy and L. Hatvani. - Amsterdam ; Oxford: North-Holland, 1987. - 2 v. (1172 p.) ; 25 cm. - Colloquia Mathematica Societatis János Bolyai; 47 . Conference proceedings. ISBN: 0444700935 : ª116.88 0444700919 (v.1) : No price 0444700927 (v.1) : No price 9638022272 (set Hungary) 9638022280 (v.1 Hungary) 9638022299 (v.2 Hungary) LCCN: gb 88008967 Nat. Bib. No.: GB88-8967 Subjects--Topical Terms: Differential equations. Dewey Class. No.: 515.35 / D569