@article{DAN_1958_123_5_a31,
     author = {K. V. Topchieva and I. F. Moskovskaya},
     title = {On the nature of the acidity of silica-alumina cracking catalysts},
     journal = {Doklady Akademii Nauk},
     pages = {891--894},
     year = {1958},
     volume = {123},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_123_5_a31/}
}