Two-Electron Systems—The Helium Atom
2019 ◽
Vol 13
(07)
◽
pp. 2050122
Keyword(s):
2003 ◽
Vol 50
(3-4)
◽
pp. 353-364
◽
Keyword(s):
2001 ◽
Vol 171
(10)
◽
pp. 1099
◽