(英语). Sugiyama, M.; Hagi, H.; Atomi, Y.; Saito, M. Diagnosis of portal venous invasion by pancreatobiliary carcinoma: value of endoscopic ultrasonography
(原始内容存档于2024-01-17). Lefebvre sets out an initial conceptual plan for his work based on a triad of spatial practice, representations of space, and representational spaces