@article{MV_1970_22_4_a9,
     author = {M. Trifunovi\v{c}},
     title = {2 - kratnaya polnota sistemy sobstvennyh i prisoedinennyh funkcij differencial'nogo operatora $L_{2}(\lambda)$},
     journal = {Matemati\v{c}ki vesnik},
     pages = {519 },
     publisher = {mathdoc},
     volume = {22},
     number = {4},
     year = {1970},
     url = {http://geodesic.mathdoc.fr/item/MV_1970_22_4_a9/}
}