T. Vanhecke et al., A VARIABLE-STEP VARIABLE-ORDER ALGORITHM FOR SYSTEMS OF STIFF ODES, International journal of computer mathematics, 63(1-2), 1997, pp. 149-157
A variable-step variable-order algorithm for stiff ODEs based on previ
ously derived stabilized extended one-step methods is established. The
developed code is tested on certain initial-value problems for system
s of ODEs contained in the test set proposed by CWI.