@article{SM_2007_198_8_a4,
     author = {P. S. Popov},
     title = {Extension of the {Hermitian} $K$-theory functor},
     journal = {Sbornik. Mathematics},
     pages = {1145--1163},
     year = {2007},
     volume = {198},
     number = {8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2007_198_8_a4/}
}