%0 Journal Article %A Schmidt, Bernhard %T On $(p\sp a,p\sp b,p\sp a,p\sp{a-b})$-relative difference sets %J Journal of Algebraic Combinatorics %D 1997 %P 279-297 %V 6 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/JAC_1997__6_3_a1/ %G en %F JAC_1997__6_3_a1