%0 Journal Article %A Wright, Michael J. %T On the Number of Prolongations of a Finite Rank Valuation %J Canadian journal of mathematics %D 1971 %P 553-556 %V 23 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-061-0/ %R 10.4153/CJM-1971-061-0 %F 10_4153_CJM_1971_061_0