@article{FPM_2008_14_2_a7,
     author = {K. V. Polyakova},
     title = {Parallel displacements on the surface of a~projective space},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {129--177},
     publisher = {mathdoc},
     volume = {14},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2008_14_2_a7/}
}