Antarctic subglacial drilling rig: Part II. Ice and Bedrock Electromechanical Drill (IBED) – CORRIGENDUM. Issue 84 (27th April 2021) - Talalay, Pavel; Li, Xingchen; Zhang, Nan; Fan, Xiaopeng; Sun, Youhong; Cao, Pinlu; Wang, Rusheng; Yang, Yang; Liu, Yongwen; Liu, Yunchen; Wu, Wei; Yang, Cheng; et al.