TY  - JOUR
AU  - Steinby, Magnus
TI  - On the solidity of general varieties of tree languages
JO  - Discussiones Mathematicae. General Algebra and Applications
PY  - 2012
SP  - 23
EP  - 53
VL  - 32
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DMGAA_2012_32_1_a1/
LA  - en
ID  - DMGAA_2012_32_1_a1
ER  -