@article{MM2_1972__6_154086,
     author = {Hermann Karcher},
     title = {On {Shikata's} {Distance} between differentiable {Structures.}},
     journal = {Manuscripta mathematica},
     pages = {53--70},
     publisher = {mathdoc},
     volume = {6},
     year = {1972},
     zbl = {0225.57014},
     url = {http://geodesic.mathdoc.fr/item/MM2_1972__6_154086/}
}