@article{MMO_1965_14_a1,
     author = {F. I. Karpelevich},
     title = {The geometry of geodesics and the eigenfunctions of the {Beltrami{\textendash}Laplace} operator on symmetric spaces},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {48--185},
     year = {1965},
     volume = {14},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1965_14_a1/}
}