@misc {MATHEDUC.02453247,
    author       = {Schirrmeister, H.},
    title        = {An approximation of by use of throws with needles. Angenaeherte Bestimmung von durch Nadelwuerfe.},
    howpublished = {Wurzel. (1976) v. 10(12) p. 187-189.},
    year         = {1976},
    identifier   = {1977d.01870},
}