@article{10_21136_CMJ_2020_0530_18,
     author = {Alzer, Horst and Kwong, Man Kam},
     title = {Inequalities for the arithmetical functions of {Euler} and {Dedekind}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {781--791},
     publisher = {mathdoc},
     volume = {70},
     number = {3},
     year = {2020},
     doi = {10.21136/CMJ.2020.0530-18},
     mrnumber = {4151705},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2020.0530-18/}
}