@article{ZNSL_2000_267_a20,
     author = {A. Sz\'{u}cs},
     title = {The fourth oriented cobordism group~$\Omega _4$ is isomorphic to~$\mathbb Z$},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {282--289},
     publisher = {mathdoc},
     volume = {267},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2000_267_a20/}
}