TY - JOUR AU - Brown, Tom C. AU - Graham, Ronald L. AU - Landman, Bruce M. TI - On the Set of Common Differences in van der Waerden’s Theorem on Arithmetic Progressions JO - Canadian mathematical bulletin PY - 1999 SP - 25 EP - 36 VL - 42 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1999-003-9/ DO - 10.4153/CMB-1999-003-9 ID - 10_4153_CMB_1999_003_9 ER -