@article{MZ_1982__181_173245,
     author = {Yukio Kusunoki and Fumio Maitani},
     title = {Variations of {Abelian} {Differentials} under {Quasiconformal} {Deformations.}},
     journal = {Mathematische Zeitschrift},
     pages = {435--450},
     publisher = {mathdoc},
     volume = {181},
     year = {1982},
     zbl = {0536.32007},
     url = {http://geodesic.mathdoc.fr/item/MZ_1982__181_173245/}
}