Mockus, A.; Fielding, R. T.; Herbsleb, J. D. (2002). "Two case studies of open source software development: Apache and Mozilla". ACM Transactions on Software Engineering and Methodology. 11 (3): 309–346. CiteSeerX10.1.1.594.5885. doi:10.1145/567793.567795. S2CID1938015.
Mockus, A.; Fielding, R. T.; Herbsleb, J. D. (2002). "Two case studies of open source software development: Apache and Mozilla". ACM Transactions on Software Engineering and Methodology. 11 (3): 309–346. CiteSeerX10.1.1.594.5885. doi:10.1145/567793.567795. S2CID1938015.
Mockus, A.; Fielding, R. T.; Herbsleb, J. D. (2002). "Two case studies of open source software development: Apache and Mozilla". ACM Transactions on Software Engineering and Methodology. 11 (3): 309–346. CiteSeerX10.1.1.594.5885. doi:10.1145/567793.567795. S2CID1938015.