%0 Journal Article %A Thomas A. Schmidt %T Rosen fractions and Veech groups, an overly brief introduction %J Actes des rencontres du CIRM %D 2009 %P 61-67 %V 1 %N 1 %I CIRM %U https://acirm.centre-mersenne.org/articles/10.5802/acirm.11/ %R 10.5802/acirm.11 %G en %F ACIRM_2009__1_1_61_0