| 2021 | ICAISC | Decision-Making Problems with Local Extremes: Comparative Study Case. | Bartlomiej Kizielewicz, Andrii Shekhovtsov, Wojciech Salabun, Andrzej Piegat |
| 2021 | ICAISC | The Usage of Possibility Degree in the Multi-criteria Decision-Analysis Problems. | Andrii Shekhovtsov, Bartlomiej Kizielewicz, Wojciech Salabun, Andrzej Piegat |
| 2021 | KES | Universal algebraic solution of the interval linear system: AX + BX = Y. | Andrzej Piegat, Marcin Plucinski |
| 2021 | KES | Application of the multidimensional RDM-arithmetic for verification of nestedness of the solution of the linear fuzzy equation system. | Andrzej Piegat, Marcin Plucinski |
| 2017 | EUSFLAT | Is Fuzzy Number the Right Result of Arithmetic Operations on Fuzzy Numbers? | Andrzej Piegat, Marek Landowski |
| 2016 | ICAISC | Local Modeling with Local Dimensionality Reduction: Learning Method of Mini-Models. | Andrzej Piegat, Marcin Pietrzykowski |
| 2016 | ICAISC | Identification of a Multi-criteria Model of Location Assessment for Renewable Energy Sources. | Wojciech Salabun, Jaroslaw Watrbski, Andrzej Piegat |
| 2015 | FQAS | Aggregation of Inconsistent Expert Opinions with Use of Horizontal Intuitionistic Membership Functions. | Andrzej Piegat, Marek Landowski |
| 2015 | ICAISC | Comparative Analysis of MCDM Methods for Assessing the Severity of Chronic Liver Disease. | Andrzej Piegat, Wojciech Salabun |
| 2015 | ICAISC | Assessment of Fertilizer Nitrogen Requirement of Sugar Beetroot Using Info-Gap Theory. | Andrzej Piegat, Karina Tomaszewska |
| 2015 | ICAISC | Geometric Approach in Local Modeling: Learning of Mini-models Based on n-Dimensional Simplex. | Marcin Pietrzykowski, Andrzej Piegat |
| 2015 | IJCCI | A New Approach to Aggregation of Inconsistent Expert Opinions. | Andrzej Piegat, Karina Tomaszewska |
| 2010 | ICAISC | Does an Optimal Form of an Expert Fuzzy Model Exist? | Andrzej Piegat, Marcin Olchowy |
| 2010 | MISSI | Average Prior Distribution of All Possible Probability Density Distributions. | Andrzej Piegat, Marek Landowski |
| 2008 | ICAISC | Bayes' Rule, Principle of Indifference, and Safe Distribution. | Andrzej Piegat, Marek Landowski |
| 2006 | ICAISC | Application of Neural Networks in Chain Curve Modelling. | Andrzej Piegat, Izabela Rejer, Marek Mikolajczyk |
| 2004 | ICAISC | Are Linguistic Evaluations Used by People of Possibilistic or Probabilistic Nature? | Andrzej Piegat |