@article{RSMUP_1992__87__151_0,
     author = {Popescu, Nicolae and Vraciu, Constantin},
     title = {On the extension of valuations on a field $K$ to $K(X)$. - {I}},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {151--168},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {87},
     year = {1992},
     mrnumber = {1183907},
     zbl = {0774.12009},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1992__87__151_0/}
}