Control and protection of a traction supply system

Lehtla, M. Control and protection of a traction supply system // 3rd International Symposium "Topical Problems of Education in the Field of Electrical and Power Engineering" : Doctoral School of Energy and Geotechnology : Kuressaare, Estonia, January 16-21, 2006. Tallinn : Tallinn University of Technology, Department of Electrical Drives and Power Electronics, 2006. p. 93-98 : ill.