1. Grioli, G., Esistenza e determinazione delle precessioni regolari dinamicamente possibili per un solido pesante asimmetrico, Ann. Mat. Pura Appl. (4), 1947, vol. 26, no. 3–4, pp. 271–281.
2. Markeyev, A. P., The Stability of the Grioli Precession, J. Appl. Math. Mech., 2003, vol. 67, no. 4, pp. 497–510; see also: Prikl. Mat. Mekh., 2003, vol. 67, no. 4, pp. 556–571.
3. Gulyaev, M. P., On a New Particular Solution of the Equations of Motion of a Heavy Rigid Body Having One Fixed Point, Vestn. Mosk. Univ. Ser. Fiz. Mat. i Estestv. Nauk, 1955, no. 3, pp. 15–21 (Russian).
4. Gulyaev, M. P., On Dynamically Possible Regular Precessions of Rigid Body with One Fixed Point, Tr. Sekt. Mat. Mekh. Akad. Nauk Kaz. SSR, 1958, vol. 1, pp. 202–208 (Russian).
5. Gulyaev, M. P., On Circular Cross-Sections of Mutual Ellipsoids of Inertia, Tr. Sekt. Mat. Mekh. Akad. Nauk Kaz. SSR, 1958, vol. 1, pp. 175–193 (Russian).