@article{BSMA_1881_2_5_1_387_1,
     author = {Lipschitz},
     title = {Sur l{\textquoteright}int\'egrale $\int _0^{\frac{\pi }{2}} (2 \cos x)^{a+b} \cos (a-b) x dx$},
     journal = {Bulletin des Sciences Math\'ematiques et Astronomiques},
     pages = {387--388},
     publisher = {Gauthier-Villars},
     volume = {2e s{\'e}rie, 5},
     number = {1},
     year = {1881},
     language = {fr},
     url = {http://archive.numdam.org/item/BSMA_1881_2_5_1_387_1/}
}