@article{MAT_1963_7_4_a7,
     author = {T. Paul},
     title = {Research problems},
     journal = {Matematika},
     pages = {101--108},
     year = {1963},
     volume = {7},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1963_7_4_a7/}
}