Rohit Parikh. Beth definability, interpolation and language splitting. Synthese, 179(2):211-221, 2011. [doi]
@article{Parikh11, title = {Beth definability, interpolation and language splitting}, author = {Rohit Parikh}, year = {2011}, doi = {10.1007/s11229-010-9778-3}, url = {http://dx.doi.org/10.1007/s11229-010-9778-3}, researchr = {https://researchr.org/publication/Parikh11}, cites = {0}, citedby = {0}, journal = {Synthese}, volume = {179}, number = {2}, pages = {211-221}, }