https://commons.ru.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 Best simultaneous approximation in normed linear spaces https://commons.ru.ac.za/vital/access/manager/Repository/vital:27400 Wed 12 May 2021 22:26:01 SAST ]]> Multiple representations and cognitive load: words, arrows, and colours when solving algebraic problems https://commons.ru.ac.za/vital/access/manager/Repository/vital:9580 Thu 13 May 2021 06:04:38 SAST ]]>