| 2023 | EUSFLAT | Conceptuality Degree of Oriented Crisply Generated Fuzzy Preconcepts. | Alexander P. Sostak, Maris Krastins, Ingrida Uljane |
| 2021 | EUSFLAT | Aggregation of Operators of Fuzzy Relational Mathematical Morphology: Erosion and Dilation. | Alexander P. Sostak, Ingrida Uljane |
| 2021 | EUSFLAT | Graded Fuzzy Preconcept Lattices: Theoretical Basis. | Alexander P. Sostak, Ingrida Uljane, Maris Krastins |
| 2021 | IJCCI | Application of Graded Fuzzy Preconcept Lattices in Risk Analysis. | Maris Krastins, Ingrida Uljane, Alexander Shostak |
| 2020 | IPMU | Fuzzy Relational Mathematical Morphology: Erosion and Dilation. | Alexander P. Sostak, Ingrida Uljane, Patrik Eklund |
| 2019 | EUSFLAT | Some remarks on topological structures in the context of fuzzy relational mathematical morphology. | Alexander P. Sostak, Ingrida Uljane |
| 2019 | EUSFLAT | Many-level fuzzy rough approximation spaces induced by many-level fuzzy preorders and the related ditopological structures. | Alexander P. Sostak, Ingrida Uljane, Aleksandrs Elkins |
| 2017 | EUSFLAT | M-bornologies on L-valued Sets. | Ingrida Uljane, Alexander P. Sostak |
| 2016 | IPMU | On a Category of Extensional Fuzzy Rough Approximation L-valued Spaces. | Aleksandrs Elkins, Alexander P. Sostak, Ingrida Uljane |
| 2013 | EUSFLAT | Bornological structures in the context of L-fuzzy sets. | Alexander P. Sostak, Ingrida Uljane |
| 2009 | EUSFLAT | On Some Fuzzy Categories of Many-Valued Topological Spaces. | Ingrida Uljane |
| 2007 | EUSFLAT | On L-valued Equalites on the L-powersets of Many-valued Sets. | Ingrida Uljane, Alexander P. Sostak |