@article{10_14712_1213_7243_2015_224,
     author = {Almira, J. M.},
     title = {Characterization of functions whose forward differences are exponential polynomials},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {435--442},
     publisher = {mathdoc},
     volume = {58},
     number = {4},
     year = {2017},
     doi = {10.14712/1213-7243.2015.224},
     mrnumber = {3737116},
     zbl = {06837077},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2015.224/}
}