Documentation: Patents, certificates, diplomas, страница 3
Certificate of authorship №940407
Certificate of authorship №780353
Certificate of authorship №764253
Certificate of authorship №697675
Certificate of authorship №599940
Certificate of authorship №1113227
Certificate of authorship №1743073
Certificate of authorship №1719872
Certificate of authorship №1719180
Certificate of authorship №1712111
Certificate of authorship №1712110
Certificate of authorship №1466128
Certificate of authorship №1391833
Certificate of authorship №1341870
Certificate of authorship №1287707
Certificate of authorship №1250417
