@article{AA_2018_30_4_a0,
     author = {I. N. Braeutigam and K. A. Mirzoev},
     title = {On the defect numbers of operators generated by {Jacobian} matrices with operator entries},
     journal = {Algebra i analiz},
     pages = {1--26},
     publisher = {mathdoc},
     volume = {30},
     number = {4},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2018_30_4_a0/}
}