Bolyai Janos Matematikai Tarsulat, Colloquium on Qualitative Theory of Differential Equations (1979 : Szeged, Hungary), & Farkas, M. (1981). Qualitative theory of differential equations. North-Holland.
Chicago Style (17th ed.) CitationBolyai Janos Matematikai Tarsulat, Hungary) Colloquium on Qualitative Theory of Differential Equations (1979 : Szeged, and Mikl�os Farkas. Qualitative Theory of Differential Equations. Amsterdam: North-Holland, 1981.
MLA (9th ed.) CitationBolyai Janos Matematikai Tarsulat, et al. Qualitative Theory of Differential Equations. North-Holland, 1981.
Warning: These citations may not always be 100% accurate.