Crowdsourcing in Software Development: Empirical Support for Configuring Contests. - Stamatia Bibi; Ioannis Zozas; Apostolos Ampatzoglou; Panagiotis G. Sarigiannidis; George Kalampokis; Ioannis Stamelos (IEEE Access, 2020)

Taxa and super taxa of schema evolution and their relationship to activity, heartbeat and duration. - Panos Vassiliadis; George Kalampokis (Inf. Syst., 2022)

Joint Source and Schema Evolution: Insights from a Study of 195 FOSS Projects. - Panos Vassiliadis; Fation Shehaj; George Kalampokis; Apostolos V. Zarras (EDBT, 2023)