  In 2015 Magri and Skrypnyk found Abel's equations for the Clebsch system on a
couple of genus three spectral curves of 2x2 and 3x3 Lax matrices. Because both
spectral curves are twofold coverings of elliptic curves, separated variables
form two reduced divisors on these elliptic curves, which completely define two
classes of linearly equivalent divisors. We want to reconstruct these classes
of equivalent divisors starting with poles of the corresponding Baker-Akhiezer
functions and standard reduction of divisors on elliptic curves. In this note,
we discuss reduction of divisors on a spectral curve of 3x3 Lax matrix having a
natural generalization to gl(n) case.
