Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Felmer, Patricio Luis and Pehkonen, Erkki and Kilpatrick, Jeremy",Posing and solving mathematical problems : advances and new perspectives,,Springer,2016,Research in mathematics education,,9783319280219,,https://cir.nii.ac.jp/crid/1130000795205823744