@article{10_4064_fm_64_2_231_240,
     author = {Gustav Hensel and Hilary Putnam},
     title = {Normal models and the field $\ensuremath{\Sigma}*_1$},
     journal = {Fundamenta Mathematicae},
     pages = {231--240},
     publisher = {mathdoc},
     volume = {64},
     number = {2},
     year = {1969},
     doi = {10.4064/fm-64-2-231-240},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-64-2-231-240/}
}