On the possibility of a helium white dwarf donor in the presumed ultracompact binary 2S 0918–549J. J. M. in 't Zand, A. Cumming, M. V. van der Sluys, F. Verbunt and O. R. PolsA&A, 441 2 (2005) 675-684DOI: https://doi.org/10.1051/0004-6361:20053002
