@ARTICLE{a2017,
     Title={A note on variable step-size formulation of a Simpsons-type second derivative block method for solving stiff systems},
     Author={Higinio Ramos, Gurjinder Singh},
     Journal={Applied Mathematics Letters},
     Volume={64},
     Number={0},
     Pages={101-107},
     Publisher={Elsevier},
     Year={2017}
}