@misc{Gajda_Karol, author={Gajda Karol}, address={Poznań}, howpublished={online}, publisher={OWN}, language={eng}, abstract={The paper presents three- and four-stage implicit interval methods of Runge-Kutta type and is a continuation of our previous paper [6] dealing with one- and two-stage methods of this kind. It is shown that the exact solution of the initial value problem belongs to interval-solutions obtained by both kinds of these methods (three- and four-stage). We also present some approximations of the widths of interval-solutions.}, type={artykuł}, }