Faghihi MR, Ghorbani E, Khosrovshahi GB, Tat S. On Optimality of Designs with Three Distinct Eigenvalues. Electron. J. Combin. [Internet]. 2013Apr.24 [cited 2026Mar.17];20(2):P16. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v20i2p16