Qualification thesis quote | surname = Trávníček | first name = Václav | institution = Masaryk University, Faculty of Social Studies | link to institution = Faculty of Social Studies of Masaryk University | title = Transformations of the Czech music market through the eyes of representatives of the four strongest media institutions | url = http://is.muni.cz/th/209837/fss_m/ | type of work = Diploma thesis | supervisor = Jiří Pavelka | location = Brno | year = 2012 | pages = 19–20 | citation = 2015-09-18
Qualification thesis quote | surname = Matoušek | first name = Daniel | institution = Masaryk University, Faculty of Arts – Institute of Music | link to institution = Faculty of Arts of Masaryk University | title = Gramophone industry in communist Czechoslovakia with a focus on the period of so-called normalization | url = http://is.muni.cz/th/217426/ff_m_b1/ | type of thesis = Master's thesis | supervisor = Viktor Pantůček | location = Brno | year = 2013 | pages = 12 | citation = 2015-09-18
Oliver Wurl: Ultraphon reflects the tone: the rise and fall of an enterprising record company. In: Classical recordings quarterly. number 63, winter 2010, pp. 37–40. ISSN2045-6247
