@article{AFM_2006_31_1_a7,
     author = {Seppo Rickman},
     title = {Simply connected quasiregularly elliptic 4-manifolds},
     journal = {Annales Fennici Mathematici},
     pages = {97--110},
     publisher = {mathdoc},
     volume = {31},
     number = {1},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2006_31_1_a7/}
}