@article{SM_1974_24_1_a2,
     author = {P. A. Kuchment and A. A. Pankov},
     title = {Classifying spaces for equivariant $K$-theory},
     journal = {Sbornik. Mathematics},
     pages = {31--48},
     year = {1974},
     volume = {24},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1974_24_1_a2/}
}