Stoicuta , O., Stoicuta , N. и Pana , T. (2009) "Small Speed Asymptotic Stability Study of a Speed Vector Control System for an Induction Motor That Contains in Its Loop a Gopinath Observer", Записки Горного института, 181, сс. 115-122. доступно на: https://pmi.spmi.ru/pmi/article/view/7043 (просмотрено: 5 декабрь 2025).

Stoicuta , O., Stoicuta , N. and Pana , T. (2009) "Small Speed Asymptotic Stability Study of a Speed Vector Control System for an Induction Motor That Contains in Its Loop a Gopinath Observer", Journal of Mining Institute, 181, pp. 115-122. Available at: https://pmi.spmi.ru/pmi/article/view/7043 (Accessed: 5 December 2025).