Glebov, I. O., Poddubnyy, V. V., Khokhlov, D., Akimov, G. A., Zhukov, M. D., Pupeza, A. K. (2026). NOPT: Quantum chemistry package for multireference perturbation theory calculations and its non-orthogonal extensions. The Journal of Chemical Physics. https://doi.org/10.1063/5.0344920