1. Stability of prismatic rods subjected to variable longitudinal forces;Beliaev,1924
2. Researches into the characteristic numbers of the Mathieu equation;Ince,1925
3. Researches into the characteristic numbers of the Mathieu equation;Ince,1925
4. Researches into the characteristic numbers of the Mathieu equation;Ince,1925
5. Lamésche-Mathieusche und verwandte Funktionen in Physik und Technik;Strutt;Ergbnisse der Mathematik,1932