Jon Barwise, Johan van Benthem. Interpolation, Preservation, and Pebble Games. Journal of Symbolic Logic, 64(2):881-903, 1999.
@article{BarwiseB99, title = {Interpolation, Preservation, and Pebble Games}, author = {Jon Barwise and Johan van Benthem}, year = {1999}, researchr = {https://researchr.org/publication/BarwiseB99}, cites = {0}, citedby = {0}, journal = {Journal of Symbolic Logic}, volume = {64}, number = {2}, pages = {881-903}, }