Christopher B. Mendillo, Glenn A. Howe, Kuravi Hewawasam, Jason Martel, Susanna C. Finn, Timothy A. Cook, Supriya Chakrabarti, "Optical tolerances for the PICTURE-C mission: error budget for electric field conjugation, beam walk, surface scatter, and polarization aberration," Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 1040010 (1 September 2017);