This monograph is a collection of papers dedicated to the application of mathematical methods, such as econometric modeling, statistical methods in conducting economic research and some others. Articles include researches in various areas: financial markets, integration processes, micro- and macroeconomics. Models generated in these papers can apply to different areas of economic activities with their own features. Moreover, models can be used as a basis of new researches with necessary accretions in them. Materials in this book are useful as for students studying economic science and economic forecasting as for 'grown up' auditory that also could find some new and helpful information for their work.