 An improved algorithm for the computation of Kronecker's
      canonical form of a singular pencil.
      Linear Algebra and Applications, 105, pp. 9-65, 1988.

</PRE>
<A name="Numerical Aspects"><B><FONT SIZE="+1">Numerical Aspects</FONT></B></A>
<PRE>
  It is shown in [1] that the algorithm is numerically backward
  stable. The operations count is proportional to (MAX(M,N))**3.

</PRE>
<A name="Comments"><B><FONT SIZE="+1">Further Comments</FONT></B></A>
<PRE>
  The difference mu(k)-nu(k), for k = 1,2,..