%0 Journal Article %A Lee Mohler %A Lex Oversteegen %T Reduction and irreducibility for words and tree-words %J Fundamenta Mathematicae %D 1985 %P 107-121 %V 126 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-126-2-107-121/ %R 10.4064/fm-126-2-107-121 %G en %F 10_4064_fm_126_2_107_121