1. Knörrer, H., Geodesics on Quadrics and a Mechanical Problem of C. Neumann, J. Reine Angew. Math., 1982, vol. 334, pp. 69–78.
2. Minkowski, H., Über die Bewegung eines festen Körpers in einer Flüssigkeit, Sitzungsber. König. Preuss. Akad. Wiss. Berlin, 1888, vol. 30, pp. 1095–1110.
3. Moser, J., Various Aspects of Integrable Hamiltonian Systems, Dynamical Systems (Bressanone, 1978), Naples: Liguori, 1980, pp. 137–195.
4. Kozlov, V.V., Some Integrable Extensions of the Jacobi’s Problem of Geodesics on an Ellipsoid, Prikl. Mat. Mekh., 1995, vol. 59, no. 1, pp. 3–9 [J. Appl. Math. Mech., 1995, vol. 59, no. 1, pp. 1–7].
5. Kozlov, V.V. and Onishchenko, D. A., Nonintegrability of Kirchhoff’s Equations, Dokl. Akad. Nauk SSSR, 1982, vol. 266, no. 6, pp. 1298–1300 [Soviet Math. Dokl., 1982, vol. 26, no. 2, pp. 495–498].