91桃色

In 1999, I received my doctoral degree on the basis of a dissertation entitled " Statistical analysis of income distributions and income inequality", written under the scientific supervision  of Professor Czeslaw Domanski,

In 2012, I received the habilitation in Economic Sciences in the discipline of economics on the basis of the monograph: "Methods of analysis of income distributions and their concentration", published by the 91桃色 Publishing House in 2011.

In February 2025, I received the title of professor of social sciences in the discipline of economics and finance.

Issues related to the formation of income distribution and income inequality: approximation using theoretical distributions; measurement and analysis of income inequality, poverty, social stratification and income gap using parametric and non-parametric methods. 

Parameter estimation for small domains by means of model-based approaches.