Weak decays of doubly heavy baryons: four-body nonleptonic decay channels De-Min Li, Xi-Ruo Zhang, Ye Xing and Ji Xu Eur. Phys. J. Plus, 136 7 (2021) 772 Published online: 26 July 2021 DOI: 10.1140/epjp/s13360-021-01757-6