Predicting Customer Churn: Customer Behavior Forecasting for Subscription-Based Organizations. - Leonidas Katelaris; Marinos Themistocleous (EMCIS, 2017)

Mobile Number Portability Using a Reliable Cloud Database Appliance to Match Predictable Performance. - Leonidas Katelaris; Marinos Themistocleous; Roberto Giovanni (EMCIS, 2018)

Immediate Mobility Number Portability: Cloud Database Appliance Platform to Provide Central Portability. - Leonidas Katelaris; Marinos Themistocleous; Fabrizio Brasca (CLOSER, 2019)

ISLAND: An Interlinked Semantically-Enriched Blockchain Data Framework. - Alexandros Kalafatelis; Konstantinos Panagos; Anastasios E. Giannopoulos; Sotirios T. Spantideas; Nikolaos C. Kapsalis; Marios Touloupou; Evgenia Kapassa; Leonidas Katelaris; Panayiotis Christodoulou; Klitos Christodoulou; Panagiotis Trakadas (GECON, 2021)

Innovative customer behavior forecasting framework for subscription-based organizations - Leonidas Katelaris (2021)

An Educational Metaverse Experiment: The First On-Chain and In-MetaverseAcademic Course. - Marinos Themistocleous; Klitos Christodoulou; Leonidas Katelaris (EMCIS, 2022)

A Framework to Enhance Smart Citizen Science in Coastal Areas. - Maria Papoutsoglou 001; Konstantinos Markakis; Loukas Chatzivasili; Georgia M. Kapitsaki; Kostas Magoutis; Leonidas Katelaris; Chryssoula Bekiari (WWW (Companion Volume), 2022)

Integrating Machine Learning with Non-Fungible Tokens. - Elias Iosif; Leonidas Katelaris (Comput., 2024)