Haar wavelet collocation method for linear first order stiff differential equations Mehmet Tarık Atay, Onur Metin Mertaslan, Musa Kasım Ağca, Abdülkadir Yılmaz and Batuhan Toker ITM Web Conf., 34 (2020) 03001 Published online: 03 December 2020 DOI: 10.1051/itmconf/20203403001