On Some Ground State and Finite Temperature Properties of Mixed Valence Compounds Induced by Next to Next-Nearest-Neighbor (NNNN) Hopping . bpasphys [Internet]. 2022 Dec. 15 [cited 2024 Nov. 28];41(2):59-64. Available from: https://acspublisher.com/journals/index.php/bpasphy/article/view/8510