@article{RM_2009_64_3_a4,
     author = {L. V. Buchok},
     title = {Danzer{\textendash}Gr\"unbaum acute-angled triangles},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {567--569},
     year = {2009},
     volume = {64},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2009_64_3_a4/}
}