@article{ZNSL_2006_330_a11,
     author = {O. B. Podkopaev},
     title = {On {Grothendieck} group of simply connected semisimple algebraic groups},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {223--235},
     year = {2006},
     volume = {330},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2006_330_a11/}
}