New Implementation of a Program to Calculate Correlated Band Structures of Polymers: An Application to the Band Strucutre of Polyparaphenylene (PPP). - Ian J. Palmer; Janos Ladik (J. Comput. Chem., 1994)

Relativistic Gaussian functions for atoms by fitting numerical results with adaptive nonlinear least-square algorithm. - A. Hu; Peter Otto; Janos Ladik (J. Comput. Chem., 1999)