How to compose Lagrangian?

statement of authorship
Eugen Paal, Jüri Virkepu
location of publication
Berlin
publisher
year of publication
pages
p. 131-140
ISBN
978-3-540-85331-2
notes
Bibliogr.: 6 ref
Paal, E., Virkepu, J. How to compose Lagrangian? // Generalized Lie theory in mathematics, physics and beyond. Berlin : Springer, 2009. p. 131-140.