1.
Yip M. Rook Placements and Jordan Forms of Upper-Triangular Nilpotent Matrices. Electron. J. Combin. [Internet]. 2018Mar.29 [cited 2026Apr.24];25(1):#P1.68. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v25i1p68