@article{Aznabayev:2019QO, author = "Aznabayev, Damir and Bekbaev, Askhat K. and Korobov, Vladimir", title = "{Nonrelativistic energy levels of the helium atom}", doi = "10.22323/1.353.0060", journal = "PoS", year = 2019, volume = "FFK2019", pages = "060" }