Yanmei Zhang Shujuan Jiang Xingya Wang Ruoyu Chen Miao Zhang An optimization algorithm applied to the class integration and test order problem. 4239-4253 2019 23 Soft Comput. 12 https://doi.org/10.1007/s00500-018-3077-1 db/journals/soco/soco23.html#ZhangJWCZ19
