@misc {MATHEDUC.02420571,
    author       = {Wollherr, R.},
    title        = {Multiplan. Reference and workbook. Multiplan. Sprach- und Arbeitsheft.},
    howpublished = {Bad Homburg vor der Hoehe: Gehlen. 1987. 91 p.},
    year         = {1987},
    msc2010      = {R77xx (U67xx)},
    identifier   = {1988h.00431},
}