- Gloria Cerasela Crisan, Camelia-Mihaela Pintea, Petrica C. Pop, Oliviu Matei. Economical connections between several European countries based on TSP data. Logic Journal of the IGPL, 28(1):33-44, 2020.
- Concepción Crespo-Turrado, José Luís Casteleiro-Roca, Fernando Sánchez Lasheras, José Antonio López-Vázquez, Francisco Javier de Cos Juez, Francisco Javier Perez Castelo, José Luís Calvo-Rolle, Emilio Corchado. Comparative Study of Imputation Algorithms Applied to the Prediction of Student Performance. Logic Journal of the IGPL, 28(1):58-70, 2020.
- Romas Alonderis, Haroldas Giedra. A proof-search system for the logic of likelihood. Logic Journal of the IGPL, 28(3):413, 2020.
- Enaitz Ezpeleta, Iñaki Vélez de Mendizabal, José María Gómez Hidalgo, Urko Zurutuza. Novel email spam detection method using sentiment analysis and personality recognition. Logic Journal of the IGPL, 28(1):83-94, 2020.
- Philippe Fournier-Viger, Yimin Zhang, Jerry Chun-Wei Lin, Duy-Tai Dinh, Hoai Bac Le. Mining correlated high-utility itemsets using various measures. Logic Journal of the IGPL, 28(1):19-32, 2020.
- Miguel Cárdenas Montes. Slope-to-optimal-solution-based evaluation of the hardness of travelling salesman problem instances. Logic Journal of the IGPL, 28(1):45-57, 2020.
- Dragan Simic, Jovana Gajic, Vladimir Ilin, Svetislav D. Simic, Svetlana Simic. A hybrid ranking ELECTRE algorithm and its applications in agricultural decision-making. Logic Journal of the IGPL, 28(1):134-149, 2020.
- Special issue: HAIS16-IGPL. Logic Journal of the IGPL, 28(1):1-3, 2020.
- Romas Alonderis, Haroldas Giedra. A proof-search system for the logic of likelihood. Logic Journal of the IGPL, 28(3):261-280, 2020.
- María Dolores Muñoz Vicente, María N. Moreno García, Vivian F. López Batista. Representation of influence zones in commercial GISs for simulation of directional processes. Logic Journal of the IGPL, 28(2):185-196, 2020.