%0 Journal Article %A A. Szűcs %T The fourth oriented cobordism group~$\Omega _4$ is isomorphic to~$\mathbb Z$ %J Zapiski Nauchnykh Seminarov POMI %D 2000 %P 282-289 %V 267 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2000_267_a20/ %G en %F ZNSL_2000_267_a20