%0 Journal Article %A Squire, Matthew B. %T Gray codes for -free strings. %J The Electronic Journal of Combinatorics [electronic only] %D 1996 %V 3 %N 1 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/EJC_1996__3_1_118904/ %G en %F EJC_1996__3_1_118904