In microeconomic analysis functions with diminishing returns to scale (DRS) have frequently been employed. Various properties of increasing quasiconcave aggregator functions with DRS are derived. Furthermore duality in the classical sense as well as of a new type is studied for such aggregator...

MOL Plc as a national champion does not simply take part in the implementation of the state's decisions but the company's cooperation is needed in realizing the economic, political and social considerations of the authorities. Therefore the company is provided with special preferential...

MOL Plc as a national champion does not simply take part in the implementation of the state's decisions but the company's cooperation is needed in realizing the economic, political and social considerations of the authorities. Therefore the company is provided with special preferential...

Product- and partner-level disaggregated trade data linked with firm-level data make possible the understanding of the structure of foreign trade. This study analyses the trade duration of firms, its relation to the products and partners and the foreign trade margins defined in different ways....

The article uses continuous wavelet analysis for the study of certain export-import time series. It is a novel methodology, with the promise, inter alia, to detect features of processes that may remain hidden for traditional methodologies. The application of wavelets has been rapidly increasing...

In our paper entitled Tendencies of the Trade Concentration” published in 2005 we analysed the global tendencies of the concentration as well as the trade of the European Union and the United States. In our present paper we analyse the concentration of the Hungarian trade, its fields of action...