Voir la notice de l'article provenant de la source Math-Net.Ru
@article{FAA_1982_16_3_a2, author = {L. M. Berkovich}, title = {Transformation of {Sturm--Liouville} differential equations}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {42--44}, publisher = {mathdoc}, volume = {16}, number = {3}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1982_16_3_a2/} }
L. M. Berkovich. Transformation of Sturm--Liouville differential equations. Funkcionalʹnyj analiz i ego priloženiâ, Tome 16 (1982) no. 3, pp. 42-44. http://geodesic.mathdoc.fr/item/FAA_1982_16_3_a2/