@article{TMF_1973_14_1_a5,
     author = {I. S. Vaklev and S. B. Drenska and M. I. Ivanov and A. B. Nikolov},
     title = {Hadron states in the scheme of ladder $U(6,6)$ symmetry},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {56--69},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1973_14_1_a5/}
}