Borges, Joaquim, Ivan Yu. Mogilnykh, Josep Rifà, and Faina I. Solov’eva. “On the Number of Nonequivalent Propelinear Extended Perfect Codes”. The Electronic Journal of Combinatorics 20, no. 2 (May 24, 2013): P37. Accessed March 17, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v20i2p37.