@article{10_4064_fm_65_1_83_93,
     author = {Andrzej Mostowski and Y. Suzuki},
     title = {On \ensuremath{\omega}-models which are not \ensuremath{\beta}-models},
     journal = {Fundamenta Mathematicae},
     pages = {83--93},
     publisher = {mathdoc},
     volume = {65},
     number = {1},
     year = {1969},
     doi = {10.4064/fm-65-1-83-93},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-65-1-83-93/}
}