@misc {MATHEDUC.02404384,
    author       = {Kullik, U. and Sieger, R.},
    title        = {Euro-MULLI. A training program for written arithmetic. Euro-MULLI. Ein Trainingsprogramm fuer das schriftliche Multiplizieren.},
    howpublished = {1991 . 10 p. Available from FIZ Karlsruhe.},
    year         = {1991},
    msc2010      = {U50xx (F30xx R20xx)},
    identifier   = {1992g.01924},
}