D. Lambert et A. Ronveaux, TOWARDS NEW SOLUTIONS OF THE GENERAL HURWITZ PROBLEM, Journal of physics. A, mathematical and general, 26(18), 1993, pp. 945-948
A formulation of the generalized Hurwitz problem is given. We show tha
t the solution of this problem is equivalent to exhibiting a matrix ex
tending Yiu's intercalate matrix consistently signed. We give examples
of explicit solutions for such a generalized Hurwitz problem in low d
imensions.