Layne T. Watson Dan Fenner Algorithm 555: Chow-Yorke Algorithm for Fixed Points or Zeros of <i>C</i><sup>2</sup> Maps [C5]. 252-259 1980 6 ACM Trans. Math. Softw. 2 http://doi.acm.org/10.1145/355887.355899 db/journals/toms/toms6.html#WatsonF80