ass = 'S5' id = 'H_8FBF1AC3' ><span>Credits</span></h2><div  class = 'S1'><span>Written by </span><span style=' font-weight: bold;'>Francisco Javier Ramírez-Gil</span><span>, </span><a href = "http://fjramireg@gmail.com"><span>fjramireg@gmail.com</span></a></div><div  class = 'S1'><span>Code site:</span></div><ul  class = 'S12'><li  class = 'S13'><a href = "https://github.com/fjramireg/StiffMa"><span>https://github.com/fjramireg/StiffMa</span></a></li><li  class = 'S13'><a href = "https://www.mathworks.com