@article{MAT_1971_15_5_a5,
     author = {A. Baker},
     title = {A remark on the class number of quadratic fields},
     journal = {Matematika},
     pages = {49--54},
     publisher = {mathdoc},
     volume = {15},
     number = {5},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1971_15_5_a5/}
}