@article{10_4064_fm_123_2_123_131,
     author = {Roman Kossak},
     title = {$L_{\ensuremath{\infty} \ensuremath{\omega}_1}-elementary equivalence of $\ensuremath{\omega}_1$-like models of PA},
     journal = {Fundamenta Mathematicae},
     pages = {123--131},
     publisher = {mathdoc},
     volume = {123},
     number = {2},
     year = {1984},
     doi = {10.4064/fm-123-2-123-131},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-123-2-123-131/}
}