Before revision: Post by user cwilliamrose on the Biplane Forum Biplane designers may use incidence to control stalling behavior, but may also use airfoil selection or other means to accomplish correct behavior.
After revision: Appendix C1 to "General Aviation Aircraft Design" by Snorri Gudmundson; section C1.2, p.9 Biplane designers may use incidence to control stalling behavior, but may also use airfoil selection or other means to accomplish correct behavior.