Institut istorii estestvoznani︠i︡a i tekhniki (Akademi︠i︡a nauk SSSR) & Grigorʹ︠i︡an, A. T. (1975). Istori︠i︡a mekhaniki giroskopicheskikh sistem. Nauka.
Lua i Stíl Chicago (17ú heag.)Institut istorii estestvoznani︠i︡a i tekhniki (Akademi︠i︡a nauk SSSR) agus Ashot Tigranovich Grigorʹ︠i︡an. Istori︠i︡a Mekhaniki Giroskopicheskikh Sistem. Moskva: Nauka, 1975.
Lua MLA (8ú heag.)Institut istorii estestvoznani︠i︡a i tekhniki (Akademi︠i︡a nauk SSSR) agus Ashot Tigranovich Grigorʹ︠i︡an. Istori︠i︡a Mekhaniki Giroskopicheskikh Sistem. Nauka, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.