@article{JMPA_1843_1_8__110_0,
     author = {Bertrand, J.},
     title = {D\'etermination de l'int\'egrale d\'efinie $\int^{1}_{\mathrm{o}}\frac{l\left(1+x\right)dx}{1+x^2}$},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {110--112},
     publisher = {Gauthier-Villars},
     volume = {1e s{\'e}rie, 8},
     year = {1843},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1843_1_8__110_0/}
}