Chen, H.(1997). Sequencing of a 1,3-1,4-beta-D-glucanase (lichenase) from the anaerobic fungus Orpinomyces strain PC-2: Properties of the enzyme expressed in Escherichia coli and evidence that the gene has a bacterial origin. Journal of Bacteriology, 179(19), 6028-6034. doi:10.1128/jb.179.19.6028-6034.1997

Chen, H. "Sequencing of a 1,3-1,4-beta-D-glucanase (lichenase) From the Anaerobic Fungus Orpinomyces Strain PC-2: Properties of the Enzyme Expressed in Escherichia Coli and Evidence That the Gene Has a Bacterial Origin". Journal of Bacteriology, 179.19 ( 1997 ): 6028-6034.