Variational functions of the padé type in several variables. An application to the ground state of the helium atom
1980 ◽
Vol 73
(1)
◽
pp. 122-126
◽
1972 ◽
Vol 56
(3)
◽
pp. 1219-1223
◽
2017 ◽
Vol 125
(3)
◽
pp. 369-371
1969 ◽
Vol 3
(2)
◽
pp. 104-106
◽
1994 ◽
Vol 51
(3)
◽
pp. 135-140
◽
1994 ◽
Vol 15
(8)
◽
pp. 893-898
◽