@article{RM_1964_19_5_a1,
     author = {I. M. Yaglom and B. A. Rozenfel'd and E. U. Yasinskaya},
     title = {Projective metrics},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {49--107},
     publisher = {mathdoc},
     volume = {19},
     number = {5},
     year = {1964},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1964_19_5_a1/}
}