@article{10_4153_CJM_1972_045_2,
     author = {Poguntke, Detlev},
     title = {A {Universal} {Property} of the {Takahashi} {Quasi-Dual}},
     journal = {Canadian journal of mathematics},
     pages = {530--536},
     year = {1972},
     volume = {24},
     number = {3},
     doi = {10.4153/CJM-1972-045-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1972-045-2/}
}