@Proceedings{EPTCS322, editor = {Dardha, Ornela and Rot, Jurriaan}, year = {2020}, title = {{\rm Proceedings Combined 27th International Workshop on} Expressiveness in Concurrency {\rm and 17th Workshop on} Structural Operational Semantics, {\rm Online, 31 August 2020}}, series = {Electronic Proceedings in Theoretical Computer Science}, volume = {322}, publisher = {Open Publishing Association}, doi = {10.4204/EPTCS.322}, }