@article{ehrenfeucht_1957,
    Author = {Ehrenfeucht, Andrzej},
    Journal = {Journal of Symbolic Logic},
    Number = {1},
    Pages = {36--38},
    Publisher = {Cambridge University Press},
    Title = {Two theories with axioms built by means of pleonasms},
    Volume = {22},
    Year = {1957},
    bdsk-url-1 = {http://dx.doi.org/10.2307/2964056},
    date-added = {2017-07-09 20:50:10 +0000},
    date-modified = {2017-07-09 20:50:10 +0000},
    doi = {10.2307/2964056}
}

@article{ehrenfeucht_1957, Author = {Ehrenfeucht, Andrzej}, Journal = {Journal of Symbolic Logic}, Number = {1}, Pages = {36--38}, Publisher = {Cambridge University Press}, Title = {Two theories with axioms built by means of pleonasms}, Volume = {22}, Year = {1957}, bdsk-url-1 = {http://dx.doi.org/10.2307/2964056}, date-added = {2017-07-09 20:50:10 +0000}, date-modified = {2017-07-09 20:50:10 +0000}, doi = {10.2307/2964056} }