@article{MZM_1969_6_2_a8,
     author = {Yu. L. Ershov},
     title = {The number of linear orders on a~field},
     journal = {Matemati\v{c}eskie zametki},
     pages = {201--211},
     publisher = {mathdoc},
     volume = {6},
     number = {2},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1969_6_2_a8/}
}