\usepackage{amsmath}
\usepackage{amssymb}
\usepackage[hidelinks]{hyperref}
-\usepackage{epstopdf}
-\usepackage{cleveref}
+%\usepackage{epstopdf}
+%\usepackage{cleveref}
-\renewcommand{\arraystretch}{1.3}
+%\renewcommand{\arraystretch}{1.3}
\author{
Lubbers, M.\\