TY - JOUR AU - Zhou, Sizhong AU - Wu, Jiancheng AU - Liu, Hongxia TI - Independence number and connectivity for fractional $( a , b , k )$-critical covered graphs JO - RAIRO. Operations Research PY - 2022 SP - 2535 EP - 2542 VL - 56 IS - 4 PB - EDP-Sciences UR - https://www.numdam.org/articles/10.1051/ro/2022119/ DO - 10.1051/ro/2022119 LA - en ID - RO_2022__56_4_2535_0 ER -