@misc {MATHEDUC.02438872,
    author       = {Gloggengiesser, H. and Kroeplin, E. and Lhotzky, A.},
    title        = {Trigonometry. Programmed textbook. For grade 10 at grammar schools and intermediate schools. Trigonometrie. Programmiert. Fuer die 10. Klasse von Gymnasien und Realschulen.},
    howpublished = {Landsberg am Lech: mvg moderne verlags gmbh. 1982. 170 p. Ser. Title: Mathematik in der Sekundarstufe 1. [ISBN 3-478-03880-4]},
    year         = {1982},
    msc2010      = {G63xx (U53xx)},
    identifier   = {1983e.06090},
}