V. Churkin and M. Lopatin, Forecast of the Small Wind Turbines Sales with Replacement Purchases and with or without Account of Price Changes. journal = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology. June 2015, vol. 102(6). 1877 - 1882 [viewed 19 September 2024]. Available from: https://publications.waset.org/pdf/10001573.