(ข้อมูลล่าสุด ประจำปีงบประมาณ 2563)
1.) Meevootisom,V., Udomvaraphunt,S. and Suander,J.R. (1987) Cloning and Expression of Bacillus Penicillin Acylase Gene in Escherichia coli. Microbial Utilization of Renewable Resource, 5:35-41.
2.) Panbangred, W., Udomvaraphunt, S. and Meevootisom, V. (1990) Genetic Manipulation of Penicillin Acylase in Bacillus sp. Journal of Science Society of Thailand 16:55-75.
3.) Udomvaraphunt,S., Chaksangchaichot,P., Sithisarn,P. Chosungnoen,N., Varavinit,S., Panbangred,W., Panijpan,B. and Meevootisom,V. (1992) Penicillin acylase : Production, Isolation, Purification and Modification. Microbial Utilization of Renewable Resource, 8:149-153.
4.) Udomvaraphunt, S. and Yoshida, T. (1992) Penicillin Acylase Enzyme Production by Fed-Batch Culture. Annual Reports of TC Biotech 15:387-393.