%0 Journal Article %A Higgins, Peter M. %T A Method for Constructing Square Roots in Finite Full Transformation Semigroups %J Canadian mathematical bulletin %D 1986 %P 344-351 %V 29 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1986-053-2/ %R 10.4153/CMB-1986-053-2 %F 10_4153_CMB_1986_053_2