@article{MS2_1992__70_1_167202,
     author = {Mikko Saarim\"aki and Pekka Sorjonen},
     title = {Valued {Groups.}},
     journal = {Mathematica Scandinavica},
     pages = {265--280},
     year = {1992},
     volume = {70},
     number = {1},
     zbl = {0760.06007},
     url = {http://geodesic.mathdoc.fr/item/MS2_1992__70_1_167202/}
}