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@article{10_4064_aa_7_2_107_119, author = {Stanis{\l}aw Knapowski}, title = {On sign-changes of the difference \ensuremath{\pi}(x)-li(x)}, journal = {Acta Arithmetica}, pages = {107--119}, publisher = {mathdoc}, volume = {7}, number = {2}, year = {1961}, doi = {10.4064/aa-7-2-107-119}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-7-2-107-119/} }
Stanisław Knapowski. On sign-changes of the difference π(x)-li(x). Acta Arithmetica, Tome 7 (1961) no. 2, pp. 107-119. doi : 10.4064/aa-7-2-107-119. http://geodesic.mathdoc.fr/articles/10.4064/aa-7-2-107-119/
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