Ghorbani, Modjtaba, Mahin Songhori, and Mina Rajabi Parsa. 2018. “NORMAL EDGE-TRANSITIVE CAYLEY GRAPHS WHOSE ORDER ARE A PRODUCT OF THREE PRIMES”. Italian Journal of Pure and Applied Mathematics 39 (February):628-35. https://journals.uniurb.it/index.php/ijpam/article/view/6871.