% -*- texinfo -*-
% @deftypefn {Function File} {@var{zr} =} tzero2 (@var{a}, @var{b}, @var{c}, @var{d}, @var{bal})
% Compute the transmission zeros of @var{a}, @var{b}, @var{c}, @var{d}.
%
% @var{bal} = balancing option (see balance); default is @code{'B'}.
%
% Needs to incorporate @command{mvzero} algorithm to isolate finite zeros;
% use @command{tzero} instead.
% @end deftypefn