@article{SM_1997_188_8_a4,
     author = {A. A. Davydov},
     title = {Periodic $\lambda$-rings and exponents of finite groups},
     journal = {Sbornik. Mathematics},
     pages = {1183--1190},
     publisher = {mathdoc},
     volume = {188},
     number = {8},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1997_188_8_a4/}
}