@article{CHEB_2017_18_2_a9,
     author = {A. V. Nikiforova},
     title = {The invariants of generalized $f$-transformations for almost contact metric structures},
     journal = {\v{C}eby\v{s}evskij sbornik},
     pages = {173--182},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CHEB_2017_18_2_a9/}
}