@article{10_21136_CMJ_1987_102186,
     author = {Yamashita, Shinji},
     title = {Subharmonicity for areal {Bloch-function} criteria},
     journal = {Czechoslovak Mathematical Journal},
     pages = {573--583},
     publisher = {mathdoc},
     volume = {37},
     number = {4},
     year = {1987},
     doi = {10.21136/CMJ.1987.102186},
     mrnumber = {913991},
     zbl = {0658.30028},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1987.102186/}
}