%0 Journal Article %A Browne, Patrick J. %A Sleeman, B. D. %T A note on the characterisation of eigencurves for certain two parameter eigenvalue problems in ordinary differential equations %J Glasgow mathematical journal %D 1993 %P 63-67 %V 35 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500009563/ %R 10.1017/S0017089500009563 %F 10_1017_S0017089500009563