Gaussian Integral Program System

Popkie, H. E., "GIPSY (Gaussian Integral Program System) A... 

It was in 197 that we began development of our new series of Gaussian integral programs especially designed for large molecules MOLASYS (Molecular Orbital Calculations on Large Systems)... 

System of Computer Programs for the Evaluation of One- and Two-Electron Integrals Involving s-, p- and d-type Contracted Cartesian Gaussian Functions," The Johns Hopkins University, 1975. 

In benchmark calculations [48, 120], however, one needs to perform atomic integrations of energy densities obtained from systems which satisfy the molecular virial theorem exactly (see discussion in Ref. [120]). Dr. Keith has written a link [121] for the Gaussian program [122] that implements Lowdin s scaling of the electronic coordinates [123, 124], the so-called self-consistent... 

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