@article{10_4064_fm_71_1_93_102,
     author = {George Wilmers},
     title = {Internally standard set theories},
     journal = {Fundamenta Mathematicae},
     pages = {93--102},
     publisher = {mathdoc},
     volume = {71},
     number = {1},
     year = {1971},
     doi = {10.4064/fm-71-1-93-102},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-71-1-93-102/}
}