The paper explores the relation between emitted CO2 in the atmosphere, asset expenditure, produced energy from renewables and energy consumption. ARDL model was developed on the basis of data for Bulgaria (2000 – 2018). As a whole the increase in asset expenditures leads to increase in emitted...

Cellular automata (CA) can be used to study nonlinear endogenous business cycles. This leads to an examination of the classification of business cycles based on Wolfram's four classes of the dynamical behaviour of cellular automata. Following the path set by Zambelli and Goodwin, a study of...