Roberts, David E (1996) Vector continued fraction algorithms. In: Clifford algebras with numeric and symbolic computations. Birkhauser Verlag AG, pp. 111-119. ISBN 0817639071 or 9780817639075

Roberts, David E (1995) On the algebraic foundations of the vector epsilon-algorithm. In: Clifford algebras and spinor structures: A special volume dedicated to the memory of Albert Crumeyrolle (1919-1992). Mathematics and its applications (321). Kluwer Academic, pp. 343-361. ISBN 0792333667 or 9780792333661