1. About testors for electrical schemes;Cheguis;Uspieji Matematicheskij Nauk,1955
2. About an algorithm to compute typical testors;Djukova;Sbornik rabot pa matematicheskij kibernetik,1976
3. On the mathematical principles for classifying objects and phenomena;Dmitriev;Diskretnyi Analiz,1966
4. Problems of fuzzy testor theory;Goldman;Automatika i Telemejanika,1980
5. An algorithm for computing the set of typical fuzzy testors;Kotelnikov;Automatika i Telemejanika,1986