James A. Lippincott, Rolf Beiderbeck, e Barbara B. Lippincott. Utilization of Octopine and Nopaline by Agrobacterium. J Bacteriol. Oct 1973; 116(1): 378–383. PMCID: PMC246433 [1]
Montoya AL, Chilton MD, Gordon MP, Sciaky D, Nester EW. Octopine and nopaline metabolism in Agrobacterium tumefaciens and crown gall tumor cells: role of plasmid genes. J Bacteriol. 1977 Jan;129(1):101-7. PMID 830636
Jeffrey G. Ellis, Allen Kerr, Jacques Tempé, Annik Petit. Arginine catabolism: A new function of both octopine and nopaline Ti-plasmids of Agrobacterium. Molecular and General Genetics MGG. 20. VI. 1979, Volume 173, Issue 3, pp 263-269. [2]