@article{10_37236_3022,
     author = {Zhi-Wei Sun},
     title = {Products and sums divisible by central binomial coefficients},
     journal = {The electronic journal of combinatorics},
     year = {2013},
     volume = {20},
     number = {1},
     doi = {10.37236/3022},
     zbl = {1266.05004},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/3022/}
}