@article{TMF_2011_168_1_a7,
     author = {P. P. Goldstein and A. M. Grundland},
     title = {Invariant description of $\mathbb{CP}^{N-1}$ sigma models},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {98--111},
     publisher = {mathdoc},
     volume = {168},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2011_168_1_a7/}
}