Interest of Defect Technical Debt: An Exploratory Study on Apache Projects. - Zengyang Li; Qinyi Yu; Peng Liang 001; Ran Mo; Chen Yang 007 (ICSME, 2020)

Multi-Programming-Language Commits in OSS: An Empirical Study on Apache Projects. - Zengyang Li; Xiaoxiao Qi; Qinyi Yu; Peng Liang 001; Ran Mo; Chen Yang 007 (ICPC, 2021)

Exploring multi-programming-language commits and their impacts on software quality: An empirical study on Apache projects. - Zengyang Li; Xiaoxiao Qi; Qinyi Yu; Peng Liang 001; Ran Mo; Chen Yang 007 (J. Syst. Softw., 2022)

Bug priority change: An empirical study on Apache projects. - Zengyang Li; Guangzong Cai; Qinyi Yu; Peng Liang 001; Ran Mo; Hui Liu 004 (J. Syst. Softw., 2024)