@article{compton_1983,
    Author = {Compton, Kevin J.},
    File = {Some useful preservation theorems - compton1983 - a - a - a - w.pdf},
    Journal = {Journal of Symbolic Logic},
    Number = {2},
    Pages = {427--440},
    Publisher = {Cambridge University Press},
    Title = {Some useful preservation theorems},
    Volume = {48},
    Year = {1983},
    bdsk-url-1 = {https://doi.org/10.2307/2273560},
    date-added = {2020-02-13 21:59:05 +0100},
    date-modified = {2020-02-13 21:59:05 +0100},
    doi = {10.2307/2273560}
}

@article{compton_1983, Author = {Compton, Kevin J.}, File = {Some useful preservation theorems - compton1983 - a - a - a - w.pdf}, Journal = {Journal of Symbolic Logic}, Number = {2}, Pages = {427--440}, Publisher = {Cambridge University Press}, Title = {Some useful preservation theorems}, Volume = {48}, Year = {1983}, bdsk-url-1 = {https://doi.org/10.2307/2273560}, date-added = {2020-02-13 21:59:05 +0100}, date-modified = {2020-02-13 21:59:05 +0100}, doi = {10.2307/2273560} }