@article{AGMS_2013_1_1_a7,
     author = {Heikkinen, Toni and Lehrb\"ack, Juha and Nuutinen, Juho and Tuominen, Heli},
     title = {Fractional {Maximal} {Functions} in {Metric} {Measure} {Spaces}},
     journal = {Analysis and Geometry in Metric Spaces},
     pages = {147--162},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {2013},
     zbl = {1275.42032},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AGMS_2013_1_1_a7/}
}