2358 20160701171704.0 ASTROimport-515 Andronov, I. L. 2000 Light Curve Analysis of Tycho Variable Stars A variety of methods has been applied to the Tycho suspected variable stars to find reliable periods. Cuypers, J. Piquard, S. IAU Colloq. 176: The Impact of Large-Scale Surveys on Pulsating Star Research 203 2000 64-65 http://esoads.eso.org/abs/2000ASPC..203...64A published in NONREF