Monitoring tools for DevOps and microservices: A systematic grey literature review - Giamattei, L.; Guerriero, A.; Pietrantuono, R.; Russo, S.; Malavolta, I.; Islam, T.; Dînga, M.; Koziolek, A.; Singh, S.; Armbruster, M.; Gutierrez-Martinez, J.M.; Caro-Alvaro, S.; et al. (Journal of Systems and Software, 2024)