@article{JGG_2001_5_1_a3,
     author = {K. Fuchigami},
     title = {Analysis of the {Spiral} {Pattern} {\protect\emph{Karakusa}}},
     journal = {Journal for geometry and graphics},
     pages = {035--044},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {2001},
     url = {http://geodesic.mathdoc.fr/item/JGG_2001_5_1_a3/}
}