Bo Bernhardsson (1991). "Explicit Solutions to the N-Queens Problem for All N". ACM SIGART Bulletin. 2 (2): 7. doi:10.1145/122319.122322. S2CID10644706.
Wirth, Niklaus (2012) [orig. 2004]. "The Eight Queens Problem". Algorithms and Data Structures(PDF). Oberon version with corrections and authorized modifications. pp. 114–118.
Bo Bernhardsson (1991). "Explicit Solutions to the N-Queens Problem for All N". ACM SIGART Bulletin. 2 (2): 7. doi:10.1145/122319.122322. S2CID10644706.