Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MOMA_1969__73_177462, author = {A.M. Fink and D.F.St. Mary}, title = {A {Generalized} {Sturm} {Comparison} {Theorem} and {Oscillation} {Coefficients.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {207--212}, publisher = {mathdoc}, volume = {73}, year = {1969}, zbl = {0182.12301}, url = {http://geodesic.mathdoc.fr/item/MOMA_1969__73_177462/} }
A.M. Fink; D.F.St. Mary. A Generalized Sturm Comparison Theorem and Oscillation Coefficients.. Monatshefte für Mathematik, Tome 73 (1969), pp. 207-212. http://geodesic.mathdoc.fr/item/MOMA_1969__73_177462/