KOPČEK, Michal. Optimal Pilot Bus Selection for the Secondary Voltage Control Using Parallelism. 1st ed. Ilmenau : Universitätsverlag Ilmenau, 2013. 147 s. Available on Internet: <https://is.stuba.sk/vv/pub_priloha.pl?id=280137> ISBN 978-3-86360-077-8. M*KOP