Two-component methods of relativistic quantum chemistry: from the Douglas–Kroll approximation to the exact two-component formalism

Relativistic regular two-component Hamiltonians

Erik van Lenthe, Evert Jan Baerends, J. G. Snijders · The Journal of Chemical Physics · 1993 · 4.4K citations

Natural Sciences, Physics, Mathematical Physics +11

Relativistic total energy using regular approximations

Erik van Lenthe, Evert Jan Baerends, J. G. Snijders · The Journal of Chemical Physics · 1994 · 3.3K citations

Natural Sciences, Chemistry, Physics +10

Quantum electrodynamical corrections to the fine structure of helium

Marvin Douglas, N. Kroll · Annals of Physics · 1974 · 2.9K citations

Natural Sciences, Physics, Atomic Physics +10

Encyclopedia of Computational Chemistry

Anselm H. C. Horn, Harald Lanig · Journal of Molecular Modeling · 1999 · 2.5K citations

Natural Sciences, Chemistry, Physics +12

Relativistic electronic-structure calculations employing a two-component no-pair formalism with external-field projection operators

Bernd A. Heß · Physical review. A, General physics · 1986 · 2.5K citations

Natural Sciences, Chemistry, Physics +17