@article{10_1007_s10587_014_0111_z,
     author = {He, Xinggang and Li, Haixiong},
     title = {On the $abc$-problem in {Weyl-Heisenberg} frames},
     journal = {Czechoslovak Mathematical Journal},
     pages = {447--458},
     publisher = {mathdoc},
     volume = {64},
     number = {2},
     year = {2014},
     doi = {10.1007/s10587-014-0111-z},
     mrnumber = {3277746},
     zbl = {06391504},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-014-0111-z/}
}