@article{10_21136_CMJ_1987_102156,
     author = {R\'ev\'esz, G\'abor},
     title = {A simple proof of {Vinogradov's} theorem on the orderability of the free product of $o$-groups},
     journal = {Czechoslovak Mathematical Journal},
     pages = {310--312},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {1987},
     doi = {10.21136/CMJ.1987.102156},
     mrnumber = {882601},
     zbl = {0626.06017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1987.102156/}
}