Piotr Jędrzejowicz, Ewa Ratajczak-Ropel: Experimental Evaluation of A-Teams Solving Resource Availability Cost Problem,  Intelligent Decision Technologies 2019, Proceedings of the 11th KES International Conference on Intelligent Decision Technologies (KES-IDT 2019), Singapur, 2020,  Springer International Publishing, Volume 1, 213-223, 

Piotr Jędrzejowicz, Izabela Wierzbowska: Apache Spark as a Tool for Parallel Population-Based Optimization,  Intelligent Decision Technologies 2019, Proceedings of the 11th KES International Conference on Intelligent Decision Technologies (KES-IDT 2019), Singapur, 2020,  Springer International Publishing, Volume 1, 181-190, 

Piotr Jędrzejowicz, Joanna Jędrzejowicz: Gene Expression Programming Classifier with Concept Drift Detection Based on Fisher Exact Test, Intelligent Decision Technologies 2019, Proceedings of the 11th KES International Conference on Intelligent Decision Technologies (KES-IDT 2019), Singapur, 2020,  Springer International Publishing, Volume 1, 203-211,

 Ireneusz Czarnowski: Intelligent Decision Technologies 2019 (KES-IDT 2019) vol. 1, Singapur, 2020, Springer International Publishing, tom  142, Robert James Howlett, Lakhmi C. Jain

Piotr Jędrzejowicz, Izabela Wierzbowska: Parallelized swarm intelligence approach for solving TSP and JSSP problems, Algorithms, 2020 vol. 13 (issue 6), art. no. 142, s. 1-18, 

Joanna Jędrzejowicz, Piotr Jędrzejowicz: GEP-based classifiers with drift-detection, Expert Systems, 2020 vol. 37, art. no. e12571, s. 1-13, 

Piotr Jędrzejowicz, Izabela Wierzbowska: Solving job shop scheduling with parallel population-based optimization and Apache Spark, Intelligent Decision Technologies : proceedings of the 12th KES International Conference on Intelligent Decision Technologies (KES-IDT 2020), 2020 vol. 193 s. 3-13,  

Ireneusz Czarnowski, Piotr Pszczółkowski: A novel framework for decision support system in human resource management, Procedia Computer Science, 2020 vol. 176, s. 1548-1556, 

Joanna Jędrzejowicz, Piotr Jedrzejowicz: GEP-based classifier with drift detection for mining imbalanced datastreams, Procedia Computer Science, 2020 vol. 176, s. 41-49, 

Ireneusz Czarnowski, Robert J. Howlett, Lakhmi C. Jain: Intelligent Decision Technologies: proceedings of the 12th KES International Conference on Intelligent Decision Technologies (KES-IDT 2020), Springer Nature, 2020, 142, 

P. Szyman: Wykrywanie społeczności w oparciu o komunikację e-mail w organizacji z wykorzystaniem pakietu R, Lublin: Wydawnictwo Naukowe TYGIEL, 2020, s. 42-51