Influence of copying machines on the preservation of originals. - Olga Perminova; Tatyana Stepanova; Irina Burtseva; Nina Manturovskaya; Valentina Popunova; Albina Sharikcova (Electron. Libr., 2006)

Elements of installed base information value. - Katrine Mahlamäki; Jukka Borgman; Jussi Rämänen; Joona Tuovinen; Max Finne; Olga Perminova; Juha Tiihonen; Mikael Öhman (ICE/ITMC, 2016)