Moti Gitik. On a question of Pereira. Arch. Math. Log., 47(1):53-64, 2008. [doi]
@article{Gitik08, title = {On a question of Pereira}, author = {Moti Gitik}, year = {2008}, doi = {10.1007/s00153-008-0070-x}, url = {http://dx.doi.org/10.1007/s00153-008-0070-x}, researchr = {https://researchr.org/publication/Gitik08}, cites = {0}, citedby = {0}, journal = {Arch. Math. Log.}, volume = {47}, number = {1}, pages = {53-64}, }