@misc {MATHEDUC.02400092,
    author       = {Eisenhart, M. and Borko, H. and Underhill, R. and Brown, C. and Agard, P. and Jones, D.},
    title        = {Conceptual knowledge falls through the cracks: complexities of learning to teach mathematics for understanding. Begriffliches Wissen faellt durch die Maschen: Verflechtungen beim Lernen des Unterrichtens von Mathematik, so dass Verstaendnis entsteht.},
    howpublished = {J. Res. Math. Educ. (Jan 1993) v. 24(1) p. 8-40. CODEN: JRMEDN [ISSN 0021-8251]},
    year         = {1993},
    msc2010      = {C39xx (B50xx)},
    identifier   = {1993g.00500},
}