Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{AM2_1969__2_182312, author = {E. LUKACS}, title = {Non {Negative} {Definite} {Solutions} of {Certain} {Differential} and {Functional} {Equations} {(Short} {Communication)}}, journal = {Aequationes mathematicae}, pages = {128--128}, publisher = {mathdoc}, volume = {2}, year = {1969}, url = {http://geodesic.mathdoc.fr/item/AM2_1969__2_182312/} }
E. LUKACS. Non Negative Definite Solutions of Certain Differential and Functional Equations (Short Communication). Aequationes mathematicae, Tome 2 (1969), p. 128. http://geodesic.mathdoc.fr/item/AM2_1969__2_182312/