TY  - JOUR
AU  - X.-P. Xu 
TI  - Tree Diagram Lie Algebras of Differential Operators and Evolution Partial Differential Equations
JO  - Journal of Lie theory
PY  - 2006
SP  - 691
EP  - 618
VL  - 16
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JLT_2006_16_4_JLT_2006_16_4_a3/
ID  - JLT_2006_16_4_JLT_2006_16_4_a3
ER  -