@Inproceedings{EPTCS193.10, author = {Hella, Lauri and Stumpf, Johanna}, year = {2015}, title = {The expressive power of modal logic with inclusion atoms}, editor = {Esparza, Javier and Tronci, Enrico}, booktitle = {{\rm Proceedings Sixth International Symposium on} Games, Automata, Logics and Formal Verification, {\rm Genoa, Italy, 21-22nd September 2015}}, series = {Electronic Proceedings in Theoretical Computer Science}, volume = {193}, publisher = {Open Publishing Association}, pages = {129-143}, doi = {10.4204/EPTCS.193.10}, }