<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">G Psycharis</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">J Novotná</style></author><author><style face="normal" font="default" size="100%">H Maraová</style></author><author><style face="normal" font="default" size="100%">M Krátká</style></author><author><style face="normal" font="default" size="100%">N Stehlíková</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Dynamic manipulation schemes of geometrical constructions: Instrumental genesis as an abstraction process</style></title><secondary-title><style face="normal" font="default" size="100%">Proceedings of the 30th Conference of the International Group for the Psychology of Mathematics Education (PME 30)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><pub-location><style face="normal" font="default" size="100%">Prague</style></pub-location><volume><style face="normal" font="default" size="100%">3</style></volume><pages><style face="normal" font="default" size="100%">385-392</style></pages><language><style face="normal" font="default" size="100%">eng</style></language></record></records></xml>