TITLE: Generating ribbon diagrams for knots known to be ribbon knots
QUESTION [6 upvotes]: Is there a source in the literature for ribbon diagrams for the knot-table knots known to be ribbon knots?
For example, I'm interested in doing a computation which needs as input a ribbon diagram for the knot $8_{20}$ (Rolfsen knot table notation).  This knot is known to be ribbon, but I don't know a ribbon diagram for the knot.  
Usually when I encounter a claim of the sort "knot X is ribbon" either the author supplies the ribbon diagram, or nothing.  Citations to information of this sort seem kind of sparse. Or am I just unaware of a standard source for this type of information?

REPLY [3 votes]: See also 'A refined Jones polynomial for symmetric unions', Michael Eisermann and Christoph Lamm, Osaka J. Math. (2011), https://projecteuclid.org/euclid.ojm/1315318344
All prime ribbon knots up to 10 crossings are given as symmetric diagrams (examples 1.14, 6.6, 6.7 and 6.8, see especially the table on page 363) which are simpler than the diagrams in Kawauchi's book.
Update 2022: My paper "The search for nonsymmetric ribbon knots" contains ribbon diagrams for all 11 and 12 crossing (prime, ribbon) knots.