Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1973__132_171930, author = {James S.W. Wong and Anton Zettl}, title = {On the {Limit} {Point} {Classification} of {Second} {Order} {Differential} {Equations.}}, journal = {Mathematische Zeitschrift}, pages = {297--304}, publisher = {mathdoc}, volume = {132}, year = {1973}, zbl = {0257.34030}, url = {http://geodesic.mathdoc.fr/item/MZ_1973__132_171930/} }
James S.W. Wong; Anton Zettl. On the Limit Point Classification of Second Order Differential Equations.. Mathematische Zeitschrift, Tome 132 (1973), pp. 297-304. http://geodesic.mathdoc.fr/item/MZ_1973__132_171930/