Velikova, E. “THE WEIGHT DISTRIBUTION OF THE COSET LEADERS OF TERNARY CYCLIC CODES WITH GENERATING POLYNOMIAL OF SMALL DEGREE”. Ann. Sofia Univ. Fac. Math. And Inf., vol. 97, Dec. 2005, pp. 115-21, https://stipendii.uni-sofia.bg/index.php/fmi/article/view/149.