@article{FPM_2013_18_3_a12,
     author = {E. E. Shirshova},
     title = {On values of elements in partially ordered groups},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {199--212},
     publisher = {mathdoc},
     volume = {18},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2013_18_3_a12/}
}