The discovery and study of the optical counterparts of the transient X-ray pulsars RX J0052.1-7319 and XTE J0111.2-7317 in the SMCS. Covino, I. Negueruela, S. Campana, G. L. Israel, V. F. Polcaro, L. Stella and F. VerrecchiaA&A, 374 3 (2001) 1009-1016DOI: https://doi.org/10.1051/0004-6361:20010773