Тунік, А. А., О. О. Абрамович, and Н. А. Абрамович. “Robust Parametrical Optimization of the Digital Control Systems of the Stratospheric Airships”. Problems of Informatization and Management, vol. 2, no. 13, June 2005, pp. 124-31, doi:10.18372/2073-4751.2.11600.