TY  - JOUR
AU  - Brough, Tara
AU  - Ciobanu, Laura
AU  - Elder, Murray
AU  - Zetzsche, Georg
TI  - Permutations of context-free, ET0L and indexed languages
JO  - Discrete mathematics & theoretical computer science
PY  - 2015-2016
VL  - 17
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.2164/
DO  - 10.46298/dmtcs.2164
LA  - en
ID  - DMTCS_2016_17_3_a20
ER  -