TY - JOUR AU - Thomas A. Schmidt TI - Rosen fractions and Veech groups, an overly brief introduction JO - Actes des rencontres du CIRM PY - 2009 SP - 61 EP - 67 VL - 1 IS - 1 PB - CIRM UR - https://acirm.centre-mersenne.org/articles/10.5802/acirm.11/ DO - 10.5802/acirm.11 LA - en ID - ACIRM_2009__1_1_61_0 ER -