TY  - JOUR
AU  - Callan, David
AU  - Mansour, Toufik
AU  - Shattuck, Mark
TI  - Wilf classification of triples of 4-letter patterns I
JO  - Discrete mathematics & theoretical computer science
PY  - 2017-2018
VL  - 19
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.23638/DMTCS-19-1-5/
DO  - 10.23638/DMTCS-19-1-5
LA  - en
ID  - DMTCS_2017_19_1_a6
ER  -