@article{Theodorakopoulos_Petsalakis_Nicolaides_1987, title={Potential-Energy Hypersurfaces of H-4 in the Ground and the 1st 2 Singlet Excited Electronic States}, volume={149}, ISSN={0166-1280}, archiveLocation={Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο}, url={https://hdl.handle.net/10442/6629}, DOI={10.1016/0166-1280(87)80042-8}, number={1–2}, journal={Journal of Molecular Structure: THEOCHEM}, publisher={Elsevier BV}, author={Theodorakopoulos, Giannoula and Petsalakis, Ioannis D. and Nicolaides, Cleanthes A.}, year={1987}, pages={23–31} }