Representation of molecular structure using quantum topology with inductive logic programming in structure-activity relationships. - Bård Buttingsrud; Einar Ryeng; Ross D. King; Bjørn K. Alsberg (J. Comput. Aided Mol. Des., 2006)

Validation of critical points in the electron density as descriptors by building quantitative structure-property relationships for the atomic polar tensor. - Bård Buttingsrud; Bjørn K. Alsberg; Per-Olof Åstrand (J. Comput. Chem., 2007)