49. R.A.A. Muzzarelli. Insetticidi inibitori della sintesi della chitina. INQUINAMENTO, 16 (3), 29-30 (1974).

53. R.A.A. Muzzarelli, G. Barontini and R. Rocchetti. Immobilization of enzymes on chitosan columns: alpha-chymotrypsin and acid phosphatase. BIOTECHNOLOGY AND BIOENGINEERING, 18, 1445-1454 (1976).

57. R.A.A. Muzzarelli, G. Barontini and R. Rocchetti. The isolation of lysozyme on chitosan. BIOTECHNOLOGY AND BIOENGINEERING, 20, 87-94 (1978).

74. R.A.A. Muzzarelli. Immobilization of enzymes on chitin and chitosan. ENZYME AND MICROBIAL TECHNOLOGY, 2, 177-184 (1980).

123. R.A.A. Muzzarelli. Chitin synthesis inhibitors: effects on insects and on non-target organisms. CRC CRITICAL REVIEWS IN ENVIRONMENTAL CONTROL, 16, 141-146 (1986).

125. R.A.A. Muzzarelli. Toxicity of diflubenzuron to non-target organisms. In CHITIN IN NATURE AND TECHNOLOGY. R.A.A. Muzzarelli, C. Jeuniaux and G.W. Gooday, eds., Pag. 183-186. Plenum Press, New York, 1986.

161. R.A.A. Muzzarelli. Le chitinasi, enzimi molto diffusi in natura. IL PRODOTTO CHIMICO, 30(10), 6-8 (1989).

182. R.A.A. Muzzarelli. Depolymerization of methyl pyrrolidinone chitosan by lysozyme. Carbohydrate Polymers, 19, 29-34 (1992).

183. F. Delben, S. Stefancich and R.A.A. Muzzarelli. Chelating ability and enzymatic hydrolysis of water soluble chitosans. Carbohydrate Polymers, 19, 17-23 (1992).

187. R.A.A. Muzzarelli. Role of lysozyme and N-acetylglucosaminidase in the resorption of wound dressings. In Advances in Chitin and Chitosan. C. Brine, J.P. Zikakis and P. Sandford, eds, Elsevier, Amsterdam, 1992, pag. 25-33.

193. R.A.A. Muzzarelli. Enzymatic modifications of chitosan for medical use. Journal of Chemical Technology & Biotechnology, 56, 413-414 (1993).

196. R.A.A. Muzzarelli. Advances with N-acetyl--D-glucosaminidases. In Chitin Enzymology, R.A.A. Muzzarelli ed., p. 357-374. Atec Edizioni, Grottammare, 1993.

201. R.A.A. Muzzarelli, M. Tomasetti and P. Ilari. Depolymerization of chitosans with the aid of papain. Enzyme and Microbial Technology, 16, 110-114 (1994).

206. R.A.A. Muzzarelli, P. Ilari, W. Xia, M. Pinotti and M. Tomasetti. Tyrosinase-mediated quinone tanning of chitinous materials. Carbohydrate Polymers, 24, 294-300 (1994).

213. R.A.A. Muzzarelli, W. Xia, M. Tomasetti, P. Ilari, Depolymerization of chitosan with the aid of a wheat germ lipase preparation. Enzyme and Microbial Technology, 17, 541-545 (1995).

217. R.A.A. Muzzarelli, Chitin Synthesis, The Polymeric Materials Encyclopedia, J.C. Salamone, ed., 1996. p. 315-320. CRC Press, Inc., Boca Raton FL, USA

218. R.A.A. Muzzarelli, Chitinases, The Polymeric Materials Encyclopedia, J.C. Salamone, ed., 1996. p. 320-325. CRC Press, Inc., Boca Raton FL, USA

225. W. Xia and R.A.A. Muzzarelli. Depolymerization of chitosan and its derivatives by lipase. (Ch) Wuxi Qinggong Daxue Xuebao, 15(1), 1-5 (1996).

228. R.A.A. Muzzarelli, A. Cosani and M. Terbojevich, Unspecific activities of lipases and amylases on chitosans. In R.A.A. Muzzarelli, ed., Chitin Enzymology, Vol. 2, ISBN 88-86889-00-3, Atec Edizioni, Italy, 1996.

229. R.A.A. Muzzarelli, Human enzymatic activities related to the therapeutical administration of chitin derivatives. Cellular and Molecular Life Science, 53, 131-140 (1997).

239. R.A.A. Muzzarelli. Depolymerization of chitins and chitosans with hemicellulase, lysozyme, papain and lipase. In R.A.A. Muzzarelli and M.G. Peter, eds., Chitin Handbook, p. 153-163. Atec, Grottammare, 1997. ISBN 88-86889-01-1

243. R.A.A. Muzzarelli, V. Stanic and V. Ramos, Enzymatic depolymerization of chitins and chitosans. In Methods in Biotechnology: Carbohydrate Biotechnology Protocols, C. Bucke, ed., Humana Press, Totowa, 1999.

258. R.A.A. Muzzarelli, Analytical biochemistry and clinical significance of N-acetyl-beta-D-glucosaminidase and related enzymes. In P. Jollès and R.A.A. Muzzarelli, eds., Chitin and Chitinases, Birkhauser Verlag, Basel 1999, p. 235-247.

281. R.A.A. Muzzarelli, M. Terbojevich, C. Muzzarelli, M. Miliani and O. Francescangeli. Partial depolymerization of chitosan with the aid of papain. In Chitin Enzymology 2001, R.A.A. Muzzarelli, ed., Atec, Italy, 2001. Pp. 405-414. ISBN 88-86889-06-2.

283. R.A.A. Muzzarelli, M. Mattioli-Belmonte, M. Miliani, C. Muzzarelli, F. Gabbanelli and G. Biagini. In vivo and in vitro biodegradation of oxychitin-chitosan and oxypullulan-chitosan complexes. Carbohydrate Polymers, 48, 15-21 (2002).

298. C. Muzzarelli, O. Francescangeli, G. Tosi, R.A.A. Muzzarelli. Susceptibility of dibutyryl chitin and regenerated chitin fibres to deacylation and depolymerization by lipases. Carbohydrate Polymers. 56, 137-145 (2004).

307. R.A.A. Muzzarelli. Aspects of chitin chemistry and enzymology, In Paoletti M and Musumeci S (Eds.). Binomium chitin-chitinase: emerging issues, Hauppauge. NY, Nova Science (2008).

321. Zhao Y, Park RD, Muzzarelli RAA (2010).  Chitin Deacetylases: Properties and Applications. In Marine Drugs, an open access journal, Marine Chitin and Chitosan issue. ISSN 1660-3397. www.mdpi.com/journal/marinedrugs Basel.