The Cosmic Large-Scale Structure in X-rays (CLASSIX) Cluster Survey - III. The Perseus-Pisces supercluster and the Southern Great Wall as traced by X-ray luminous galaxy clustersHans Böhringer, Gayoung Chon and Joachim TrümperA&A, 651 (2021) A16DOI: https://doi.org/10.1051/0004-6361/202140864