TY - JOUR AU - Calkin, Neil J. AU - Finch, Steven R. TI - Conditions on periodicity for sum-free sets. JO - Experimental mathematics PY - 1996 SP - 131 EP - 137 VL - 5 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EXMA_1996__5_2_231422/ LA - en ID - EXMA_1996__5_2_231422 ER -