?url_ver=Z39.88-2004&rft_id=10.1051%2Fmatecconf%2F201815005016&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Abd+Halim&rft.au=Abd+Halim%2C+F.A.&rft.aufirst=F.A.&rft.title=Towards+the+Development+of+Mobile+App+Design+Model+for+Dyscalculia+Children+in+Malaysia&rft.date=2018&rft.issn=2261236X&rft.genre=proceeding