%0 Journal Article %A Cameron, H. A. %A Wood, D. %T Pm numbers, ambiguity, and regularity %J RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications %D 1993 %P 261-275 %V 27 %N 3 %I EDP-Sciences %U http://www.numdam.org/item/ITA_1993__27_3_261_0/ %G en %F ITA_1993__27_3_261_0