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@article{TM2_2003_VI_1_a2, author = {Jan Hendrik M\"uller}, title = {Exploring {Number-pyramids} in the {Secondary} {Schools}}, journal = {The Teaching of Mathematics}, pages = {37 }, publisher = {mathdoc}, volume = {VI}, number = {1}, year = {2003}, language = {en}, url = {http://geodesic.mathdoc.fr/item/TM2_2003_VI_1_a2/} }
Jan Hendrik Müller. Exploring Number-pyramids in the Secondary Schools. The Teaching of Mathematics, VI (2003) no. 1, p. 37 . http://geodesic.mathdoc.fr/item/TM2_2003_VI_1_a2/