@article{JIS_2004__7_2_a1,
     author = {Sury, B. and Wang, Tianming and Zhao, Feng-Zhen},
     title = {Identities involving reciprocals of binomial coefficients},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {7},
     number = {2},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2004__7_2_a1/}
}