TY  - JOUR
AU  - Kolarz, Michał
TI  - The code problem for directed figures
JO  - RAIRO. Theoretical Informatics and Applications
PY  - 2010
SP  - 489
EP  - 506
VL  - 44
IS  - 4
PB  - EDP-Sciences
UR  - https://www.numdam.org/articles/10.1051/ita/2011005/
DO  - 10.1051/ita/2011005
LA  - en
ID  - ITA_2010__44_4_489_0
ER  -