18th International Symposium "Topical Problems in the Field of Electrical and Power Engineering". Doctoral School of Energy and Geotechnology III : Toila, Estonia, January 14-19, 2019 : [proceedings]2019 https://www.ester.ee/record=b5183874*est 19th International Symposium “Topical problems in the field of electrical and power engineering. Doctoral school of energy and geotechnology. III” : Tartu, Estonia, January 14-17, 20202020 https://www.ester.ee/record=b5291755*est 17th International Symposium “Topical Problems in the Field of Electrical and Power Engineering”. Doctoral school of energy and geotechnology. III : Kuressaare, Estonia, January 15-20, 2018Vinnikov, Dmitri; Liivik, Elizaveta2018 http://www.ester.ee/record=b4763182*est Wind turbines2018 https://doi.org/10.3390/books978-3-03897-361-4