Barnabás Bede Luciano Stefanini Numerical Solution of Interval Differential Equations with Generalized Hukuhara Differentiability. 730-735 2009 IFSA/EUSFLAT Conf. http://www.eusflat.org/proceedings/IFSA-EUSFLAT_2009/pdf/tema_0730.pdf conf/eusflat/2009 db/conf/eusflat/eusflat2009.html#BedeS09