Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Nishino Tomotoshi and Hieida Yasuhiro and Okunishi Kouichi and Maeshima Nobuya and Akutsu Yasuhiro and Gendiar Andrej,Two-Dimensional Tensor Product Variational Formulation.,Progress of Theoretical Physics,0033068X,THE PHYSICAL SOCIETY OF JAPAN,2001,105,3,409-417,https://cir.nii.ac.jp/crid/1390282679135061504,https://doi.org/10.1143/ptp.105.409