@article{MZM_1975_17_4_a13,
     author = {N. I. Nagnibida},
     title = {On the question of reducing volterra operators in analytic spaces to their simplest form},
     journal = {Matemati\v{c}eskie zametki},
     pages = {625--630},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1975_17_4_a13/}
}