• Development of theory and methods of complex optimisation of control and operational reliability of interconnected power systemsKrumm, Lembit; Kurrel, Ü.; Terno, OlafOil shale2007 / 2S, p. 377-388 https://kirj.ee/wp-content/plugins/kirj/pub/OS-2S-2007-377-388_20230314000936.pdf