Widespread Backtracking by RNA Pol II Is a Major Effector of Gene Activation, 5' Pause Release, Termination, and Transcription Elongation Rate.Sheridan RM, Fong N, D'Alessandro A, Bentley DL.Mol Cell. 2019 Jan 3;73(1):107-118.e4.

Non-backtracking walks reveal compartments in sparse chromatin interaction networks.Polovnikov K, Gorsky A, Nechaev S, Razin SV, Ulianov SV.Sci Rep. 2020 Jul 9;10(1):11398. 

Real-Time Observation of Backtracking by Bacterial RNA Polymerase.Lass-Napiorkowska A, Heyduk T.Biochemistry. 2016 Feb 2;55(4):647-58.