08Jun/21 Innovation of Enterprises of the Business Services Sub-sector in Poland. Adapting the VUCA Concept
08Jun/21 Comparison of the Effectiveness of Health Systems in the European Countries – two-stage DEA Model
08Jun/21 Assessment of the Effectiveness of Commodity Mutual Funds during the COVID-19 Pandemic – On the Example of Poland and Hungary
08Jun/21 On the Influence of Determinants on GDP per capita. An Artificial Neural Network Approach for Selected European Countries