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*Weigand, H. G., Neill, N., [[Andrea Peter-Koop|Peter-Koop, A.]], [[Kristina Reiss|Reiss, K.]], [[Günter Törner|Törner, G.]] & Wollring, B.(Eds.). (2002). ''Developments in Mathematics Education in German-speaking Countries. Selected Papers from the [[Jahrestagung 2000 der GDM|Annual Conference on Didactics of Mathematics]]'', Potsdam, 2000''. Hildesheim: Franzbecker.
 
*Weigand, H. G., Neill, N., [[Andrea Peter-Koop|Peter-Koop, A.]], [[Kristina Reiss|Reiss, K.]], [[Günter Törner|Törner, G.]] & Wollring, B.(Eds.). (2002). ''Developments in Mathematics Education in German-speaking Countries. Selected Papers from the [[Jahrestagung 2000 der GDM|Annual Conference on Didactics of Mathematics]]'', Potsdam, 2000''. Hildesheim: Franzbecker.
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*Weigand,H. G., Neill, N., Peter-Koop, A., [[Kristina Reiss|Reiss, K.]], Törner, G. & Wollring, B.(Eds.). (2002). ''Developments in Mathematics Education in German-Speaking Countries. Selected Papers from theAnnual Conference on Didactics of Mathematics, Bern, 1999''. Hildesheim: Franzbecker.
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*Weigand, H. G., Neill, N., Peter-Koop, A., [[Kristina Reiss|Reiss, K.]], Törner, G. & [[Bernd Wollring|Wollring, B.]] (Eds.). (2002). ''Developments in Mathematics Education in German-Speaking Countries. Selected Papers from the Annual Conference on Didactics of Mathematics, Bern, 1999''. Hildesheim: Franzbecker.
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*Weigand,H. G., Peter-Koop, A., Neill, N., [[Kristina Reiss|Reiss, K.]], Törner, G. & Wollring, B.(Eds.). (2001). ''Developments in Mathematics Education in German-Speaking Countries. Selected Papers from the Annual Conference on Didactics of Mathematics, Munich, 1998''. Hildesheim:Franzbecker.
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*Weigand, H. G., Peter-Koop, A., Neill, N., [[Kristina Reiss|Reiss, K.]], Törner, G. & Wollring, B.(Eds.). (2001). ''Developments in Mathematics Education in German-Speaking Countries. Selected Papers from the [[Jahrestagung 1998 der GDM|Annual Conference on Didactics of Mathematics]], Munich, 1998''. Hildesheim: Franzbecker.
    
*Weigand,H. G., [[Elmar Cohors-Fresenborg|Cohors-Fresenborg, E.]], Houston, K., Maier, H., Peter-Koop, A., [[Kristina Reiss|Reiss, K.]],Törner, G. & Wollring, B. (Eds.). (2001).''Developments in Mathematics Education in Germany. Selected Papers from the Annual Conference on Didactics of Mathematics, Leipzig, 1997''. Hildesheim: Franzbecker.
 
*Weigand,H. G., [[Elmar Cohors-Fresenborg|Cohors-Fresenborg, E.]], Houston, K., Maier, H., Peter-Koop, A., [[Kristina Reiss|Reiss, K.]],Törner, G. & Wollring, B. (Eds.). (2001).''Developments in Mathematics Education in Germany. Selected Papers from the Annual Conference on Didactics of Mathematics, Leipzig, 1997''. Hildesheim: Franzbecker.