Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_2008_38_2a_15, author = {M. Budin\v{c}evi\'c and V. Mari\'c}, title = {A remark on regular {Sturm-Liouville} system}, journal = {Novi Sad Journal of Mathematics}, pages = {141-143}, publisher = {mathdoc}, volume = {38}, number = {2}, year = {2008}, url = {http://geodesic.mathdoc.fr/item/NSJOM_2008_38_2a_15/} }
M. Budinčević; V. Marić. A remark on regular Sturm-Liouville system. Novi Sad Journal of Mathematics, Tome 38 (2008) no. 2. http://geodesic.mathdoc.fr/item/NSJOM_2008_38_2a_15/