Sergey Svetunkov, PhD in Economics, Doctor of Economic Sciences, Professor at the Peter the Great St. Petersburg Polytechnic University, is the leading expert in the field of mathematical modelling in economics and economic forecasting. He is an author of more than 250 scientific publications. Over the last few decades, he has also acted as an expert of the Russian Science Foundation.

Ivan Svetunkov is a Lecturer of Marketing Analytics at Lancaster University, UK. He has PhD in Management Science from Lancaster University and a candidate degree in economics from Saint Petersburg State University of Economics and Finance. His main area of interest is statistical learning for forecasting, focusing on demand forecasting in healthcare, supply chains and retail. He is a creator and a maintainer of several forecasting- and analytics-related R packages and an author of many papers and a monograph "Forecasting and Analytics with the Augmented Dynamic Adaptive Model".

Chapter 1. Introduction to theory of complex variables.- Chapter 2. Simple Complex Linear Regression.- Chapter 3. Correlation analysis of complex random variables.- Chapter 4. Multiple Complex Linear Regression.- Chapter 5. Assumptions of Complex Linear Models.- Chapter 6. Complex Dynamic Models.- Chapter 7. Examples of application.