Contains the keyword longitudinal study

Azarbakht A “E”, Jensen C. Longitudinal Analysis of the Run-up to a Decision to Break-up (Fork) in a Community [Internet]. Open Source Systems: Towards Robust Practices 13th International Conference on Open Source Systems. Springer; 2017. pp. 204-217. https://link.springer.com/chapter/10.1007/978-3-319-57735-7_19
Subramaniam C, Sen R, Nelson ML. Determinants of open source software project success: A longitudinal study. Decis. Support Syst. [Internet]. Amsterdam, The Netherlands, The Netherlands: Elsevier Science Publishers B. V.; 2009;46:576–585. http://portal.acm.org/citation.cfm?id=1480545.1480824
Long Y, Siau K. Social network structures in open source software development teams. Journal of Database Management. 2007;18:25-40.