@article{TMF_1976_29_3_a13,
     author = {I. S. Vaklev and S. B. Drenska and M. I. Ivanov and A. B. Nikolov},
     title = {Admissible complete sets in ladder $U(6,6)$-symmetry},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {417--423},
     publisher = {mathdoc},
     volume = {29},
     number = {3},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1976_29_3_a13/}
}