Study on the resistance and slow release characteristics of tracer materials for coal spontaneous combustion in Mined areas - Xiangming Hu; Haibo Hong; Yanyang Zhao; Siyu Niu; Biao Kong; Mingyang Zou; Guoqing Zhang; Liang Qiao; Hao Dong; Shenghe Chen; Qiangqiang Liang (Fuel, 2026)