@article{DAN_1962_142_1_a7,
     author = {L. M. Kuks},
     title = {Sturm's theorem and the oscillation of solutions of strongly elliptic systems},
     journal = {Doklady Akademii Nauk},
     pages = {32--35},
     publisher = {mathdoc},
     volume = {142},
     number = {1},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_142_1_a7/}
}