Application of the frobishers’ technique for creating the open tasks

ČIERNIKOVÁ, Dominika. Application of the frobishers’ technique for creating the open tasks. In Aplimat 2020. medzinárodná konferencia. Aplimat 2020 : proceedings 19th conference on applied mathematics Aplimat 2020, Bratislava, 04.-06.02.2020. 1. vyd. - Bratislava : Spektrum STU, 2020. ISBN 978-80-227-4983-1, s. 293-297.