The S. A. Lebedev Institute of Precision Mechanics and Computing Technology, a soviet/russian lab famous for developing soviet mainframes like the BESM 6. Seemingly still in existence today. See .

There's not much to be found about ITMiVT or soviet computing in general on the web (or on Everything2), and I think that's sad. I don't even know how ITMiVT would be spelled out in russian.