Photometric variability of southern T Tauri stars C. C. Batalha, G. R. Quast, C. A.O. Torres, P. C.R. Pereira, M. A.O. Terra, F. Jablonski, R. P. Schiavon, J. R. de la Reza and M. J. Sartori Astron. Astrophys. Suppl. Ser., 128 3 (1998) 561-571 Published online: 15 March 1998 DOI: 10.1051/aas:1998163