Albersheim, P; Anderson, A J; Bauer, W D; Keegstra, K G & Talmadge, K W. STRUCTURE OF THE PRIMARY CELL WALL OF HIGHER PLANTS, AND CONTROL OF WALL DEGRADATION BY PATHOGEN SECRETED ENZYMES., report, October 31, 1972; (https://digital.library.unt.edu/ark:/67531/metadc1035733/m1/2/: accessed March 25, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .