@article{10_4064_cm138_2_7,
     author = {Yunbai Dong},
     title = {A note on the {Hyers{\textendash}Ulam} problem},
     journal = {Colloquium Mathematicum},
     pages = {233--239},
     publisher = {mathdoc},
     volume = {138},
     number = {2},
     year = {2015},
     doi = {10.4064/cm138-2-7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm138-2-7/}
}