Mikolaj Bojanczyk, Laure Daviaud, Bruno Guillon, Vincent Penelle, A. V. Sreejith. Undecidability of a weak version of MSO+U. Logical Methods in Computer Science, 16(1), 2020. [doi]
@article{BojanczykDGPS19, title = {Undecidability of a weak version of MSO+U}, author = {Mikolaj Bojanczyk and Laure Daviaud and Bruno Guillon and Vincent Penelle and A. V. Sreejith}, year = {2020}, doi = {10.23638/LMCS-16(1:12)2020}, url = {https://doi.org/10.23638/LMCS-16(1:12)2020}, researchr = {https://researchr.org/publication/BojanczykDGPS19}, cites = {0}, citedby = {0}, journal = {Logical Methods in Computer Science}, volume = {16}, number = {1}, }