TY - JOUR AU - Piotr Mormul AU - Fernand Pelletier TI - Symmetries of special 2-flags JO - Journal of Singularities PY - 2020 SP - 187 EP - 204 VL - 21 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.5427/jsing.2020.21k/ DO - 10.5427/jsing.2020.21k ID - 10_5427_jsing_2020_21k ER -