TY  - JOUR
AU  - Vesselin Drensky
AU  - Ralf Holtkamp
TI  - Planar trees, free nonassociative algebras, invariants, and elliptic integrals
JO  - Algebra and discrete mathematics
PY  - 2008
SP  - 1
EP  - 41
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ADM_2008_2_a0/
LA  - en
ID  - ADM_2008_2_a0
ER  -