@article{10_4064_aa97_1_5,
     author = {Zhi-Wei Sun},
     title = {Products of binomial coefficients modulo $p^2$},
     journal = {Acta Arithmetica},
     pages = {87--98},
     publisher = {mathdoc},
     volume = {97},
     number = {1},
     year = {2001},
     doi = {10.4064/aa97-1-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa97-1-5/}
}