Solvent effects on the NMR parameters of H2S and HCN. - Kurt V. Mikkelsen; Kenneth Ruud; Trygve Helgaker (J. Comput. Chem., 1999)

Basis-set completeness profiles in two dimensions. - Alexander A. Auer; Trygve Helgaker; Wim Klopper (J. Comput. Chem., 2002)

Four-component relativistic Kohn-Sham theory. - Trond Saue; Trygve Helgaker (J. Comput. Chem., 2002)

Electron correlation: The many-body problem at the heart of chemistry. - David P. Tew; Wim Klopper; Trygve Helgaker (J. Comput. Chem., 2007)

Attractive electron-electron interactions within robust local fitting approximations. - Patrick Merlot; Thomas Kjærgaard; Trygve Helgaker; Roland Lindh; Francesco Aquilante; Simen Reine; Thomas Bondo Pedersen (J. Comput. Chem., 2013)

Internal-to-cartesian back transformation of molecular geometry steps using high-order geometric derivatives. - Vladimir V. Rybkin; Ulf Ekström; Trygve Helgaker (J. Comput. Chem., 2013)

Insights into the dynamics of evaporation and proton migration in protonated water clusters from large-scale born-oppenheimer direct dynamics. - Vladimir V. Rybkin; Anton O. Simakov; Vebjørn Bakken; Simen Reine; Thomas Kjærgaard; Trygve Helgaker; Einar Uggerud (J. Comput. Chem., 2013)