@article{10_4064_fm_82_1_25_38,
     author = {E. L\'opez-Escobar},
     title = {Elementary interpretations of negationless arithmetic},
     journal = {Fundamenta Mathematicae},
     pages = {25--38},
     publisher = {mathdoc},
     volume = {82},
     number = {1},
     year = {1974},
     doi = {10.4064/fm-82-1-25-38},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-82-1-25-38/}
}