Lenart, Łukasz, & Pipień, M. (2015). Empirical Properties of the Credit and Equity Cycle within Almost Periodically Correlated Stochastic Processes - the Case of Poland, UK and USA. Central European Journal of Economic Modelling and Econometrics, 7(3), 169–186. https://doi.org/10.24425/cejeme.2015.119216