Differential equations : qualitative theory, vol. 1 / edited by B. SZ.-Nagy and L. Hatvani. Szőkefalvi-Nagy, Béla, 1913- Hatvani, L. Colloquium on Qualitative Theory of Differential Equations (2nd : 1984 : Szeged, Hungary) Differential equations Qualitative theory Congresses. QA370 .D54 1987 515.35 19 SZD Papers from the second Colloquium on Qualitative Theory of Differential Equations, held in Szeged, Hungary, Aug. 27-31, 1984. Includes bibliographies. Amsterdam : North-Holland, c1987. c1987. 1987 Text 589 p. ; eng Colloquia mathematica Societatis János Bolyai, 47