O157.5
循环图具有很强的对称性，作为有价值的通讯网络拓扑已受到广泛的关注。研究了一类循环图Ｃｎ〈１，ｋ〉，完全确定了其色数。
There are good symmetry in the circulants.Communication network topology is largely focused because of its value of application.The chromatic numbers of the circulants C n<1,k> are completely determined.
瞿晓鸿 杨晓帆.一类循环图的色数[J].重庆大学学报,1998,21(6):111-116.
