@article{10_4064_aa127_4_3,
     author = {Zhi-Wei Sun and Daqing Wan},
     title = {On {Fleck} quotients},
     journal = {Acta Arithmetica},
     pages = {337--363},
     publisher = {mathdoc},
     volume = {127},
     number = {4},
     year = {2007},
     doi = {10.4064/aa127-4-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa127-4-3/}
}