TY - JOUR AU - Padraig Ó Catháin TI - Inequivalence of difference sets: on a remark of Baumert JO - The electronic journal of combinatorics PY - 2013 VL - 20 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.37236/2277/ DO - 10.37236/2277 ID - 10_37236_2277 ER -