A photometric study of the W UMa-type system U PegasiG. Djurašević, H. Rovithis-Livaniou, P. Rovithis, S. Erkapić and N. MilovanovićA&A, 367 3 (2001) 840-847DOI: https://doi.org/10.1051/0004-6361:20000493