bPPI-seq has been published on Cell Research.

Zhang Y, Ku WL, Liu S, Cui K, Jin W, Tang Q, Lu W, Ni B, Zhao K. 2017 Genome-wide identification of histone H2A and histone variant H2A.Z-interacting proteins by bPPI-seq. Cell Res.  (https://www.ncbi.nlm.nih.gov/pubmed/28862252)