Jungnickel, Uwe; Kielau, Gerald; Maißer, Peter; Müller, Andreas A generalization of the Helmholtz conditions for the existence of a first-order Lagrangian using nonholonomic velocities. (English) Zbl 1156.70010 ZAMM, Z. Angew. Math. Mech. 89, No. 1, 44-53 (2009). MSC: 70H03 70F25 70F20 70E05 × Cite Format Result Cite Review PDF Full Text: DOI
Jungnickel, Uwe; Kielau, Gerald; Maißer, Peter; Müller, Andreas A passivity-based control of Euler-Lagrange systems with a non-quadratic Lagrangian. (English) Zbl 1153.70016 ZAMM, Z. Angew. Math. Mech. 88, No. 12, 982-992 (2008). MSC: 70Q05 70H03 70G10 93D20 × Cite Format Result Cite Review PDF Full Text: DOI
Kielau, Gerald; Maißer, Peter A generalization of the Helmholtz conditions for the existence of a first-order Lagrangian. (English) Zbl 1105.70010 ZAMM, Z. Angew. Math. Mech. 86, No. 9, 722-735 (2006). MSC: 70H03 70Q05 × Cite Format Result Cite Review PDF Full Text: DOI