Plasmatron constructionKrieger, Enno; Pihlak, UkuProceedings of the Estonian Academy of Sciences. Engineering1998 / 1, p. 43-52: ill Spheroidization of quartz powder in a low temperature plasma jetJakimova, Valentina; Sui, Helmut; Pihlak, Uku; Krieger, EnnoProceedings of the 2nd International Conference, 27-29th April 2000, Tallinn, Estonia / DAAAM International Vienna, DAAAM National Estonia2000 / p. 263-266 : ill