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@article{10_4064_fm_108_1_7_21, author = {Jean Larson}, title = {Pinning for pairs of countable ordinals}, journal = {Fundamenta Mathematicae}, pages = {7--21}, publisher = {mathdoc}, volume = {108}, number = {1}, year = {1980}, doi = {10.4064/fm-108-1-7-21}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-108-1-7-21/} }
Jean Larson. Pinning for pairs of countable ordinals. Fundamenta Mathematicae, Tome 108 (1980) no. 1, pp. 7-21. doi : 10.4064/fm-108-1-7-21. http://geodesic.mathdoc.fr/articles/10.4064/fm-108-1-7-21/
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