@article{10_4153_CMB_2017_024_x,
     author = {Saito, Hiroki and Tanaka, Hitoshi},
     title = {The {Fefferman{\textendash}Stein} {Type} {Inequalities} for {Strong} and {Directional} {Maximal} {Operators} in the {Plane}},
     journal = {Canadian mathematical bulletin},
     pages = {191--200},
     year = {2018},
     volume = {61},
     number = {1},
     doi = {10.4153/CMB-2017-024-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2017-024-x/}
}