@inbook{c32ac68951044088bb3aa751154661a8,
title = "Column calculation and algorithms",
keywords = "Wiskunde en Informatica (WIIN), Mathematics, Landbouwwetenschappen, Natuurwetenschappen, Wiskunde: algemeen",
author = "A. Treffers and A. Noteboom and {de Goeij}, E.T.J.",
year = "2001",
language = "Undefined/Unknown",
publisher = "Freudenthal Institute & SLO",
pages = "147--172",
editor = "{van den Heuvel}, M.H.A.M.",
booktitle = "Children Learn Mathematics. A learning-teaching trajectory with intermediate attainment targets for calculation with whole numbers in Primary School",
}