TY  - JOUR
AU  - Kozik, Jakub
TI  - Undecidable problems concerning densities of languages
JO  - Discrete mathematics & theoretical computer science
PY  - 2005
VL  - DMTCS Proceedings vol. AF, Computational Logic and Applications (CLA '05)
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.3471/
DO  - 10.46298/dmtcs.3471
LA  - en
ID  - DMTCS_2005_special_251_a3
ER  -