@article{10_4064_aa171_4_1,
     author = {David Brink},
     title = {Nilakantha's accelerated series for $\pi $},
     journal = {Acta Arithmetica},
     pages = {293--308},
     publisher = {mathdoc},
     volume = {171},
     number = {4},
     year = {2015},
     doi = {10.4064/aa171-4-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa171-4-1/}
}