@article{JMPA_1846_1_11__471_0,
     author = {Roberts, William},
     title = {Sur l'int\'egrale d\'efinie $\int^{\frac{1}{2}\pi}\frac{\log \left(1+n\sin ^2\varphi\right)d\varphi}{\sqrt{1-k^2\sin ^2\varphi}}$},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {471--476},
     publisher = {Gauthier-Villars},
     volume = {1e s{\'e}rie, 11},
     year = {1846},
     language = {fr},
     url = {http://archive.numdam.org/item/JMPA_1846_1_11__471_0/}
}