TY - JOUR AU - Dalla Volta, Francesca AU - Siemons, Johannes TI - Orbit equivalence and permutation groups defined by unordered relations JO - Journal of Algebraic Combinatorics PY - 2012 SP - 547 EP - 564 VL - 35 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JAC_2012__35_4_a5/ LA - en ID - JAC_2012__35_4_a5 ER -