@article{10_4064_aa141_1_2,
     author = {Shaun Cooper},
     title = {Series and iterations for $1/\pi $},
     journal = {Acta Arithmetica},
     pages = {33--58},
     publisher = {mathdoc},
     volume = {141},
     number = {1},
     year = {2010},
     doi = {10.4064/aa141-1-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa141-1-2/}
}