@article{IM_1980__57_142709,
     author = {Mark A. Ronan},
     title = {A {Geometric} {Characterization} of {Moufang} {Hexagons.}},
     journal = {Inventiones mathematicae},
     pages = {227--262},
     publisher = {mathdoc},
     volume = {57},
     year = {1980},
     zbl = {0429.51002},
     url = {http://geodesic.mathdoc.fr/item/IM_1980__57_142709/}
}