Monitoring and modelling of white dwarfs with extremely weak magnetic fields - WD 2047+372 and WD 2359-434J. D. Landstreet, S. Bagnulo, G. Valyavin and A. F. ValeevA&A, 607 (2017) A92DOI: https://doi.org/10.1051/0004-6361/201731432
