Study of the Per OB2 star forming complex - II. Structure and kinematics A. N. Belikov, N. V. Kharchenko, A. E. Piskunov, E. Schilbach and R.-D. Scholz A&A, 387 1 (2002) 117-128 Published online: 15 May 2002 DOI: 10.1051/0004-6361:20020418