TY - JOUR TI - The W UMa-type stars program: First results, current status and perspectives AU - Kreiner, J.M. AU - Zola, S. AU - Ogloza, W. AU - Pokrzywka, B. AU - Drozdz, M. AU - Stachowski, G. AU - Zakrzewski, B. AU - Niarchos, P.G. AU - Gazeas, K. AU - Rucinski, S.M. AU - Siwak, M. AU - Koziel, D. AU - Kjurkchieva, D. AU - Marchev, D. JO - Astrophysics and Space Science PY - 2006 VL - 304 TODO - 1-4 SP - 71-73 PB - SN - 0004-640X, 1572-946X TODO - 10.1007/s10509-006-9077-0 TODO - null TODO - We present the results of a statistical investigation of the period-color and period-bolometric magnitude relations using a carefully selected sample of 120 contact systems with known physical parameters. © Springer Science+Business Media B.V. 2006. ER -