للمتابعه من هنا
1-http://www.nigeriamedj.com/article.asp?issn=0300-1652;year=2010;volume=51;issue=4;spage=141;epage=146;aulast=Akujobi
2-http://en.wikipedia.org/wiki/Beta-lactamase
3-http://www.abbiodisk.com/pdf/pi/75001546.PDF
4-http://www.ugr.es/~cts521/documentos/Sorloz-MicrobiolRes162.pdf
5-http://www.liebertonline.com/doi/abs/10.1089/107662904323047745?journalCode=mdr
6-http://tsmb08.cryst.bbk.ac.uk/notice/course/demoproject/bridges/PDFs/28.pdf
7-http://www.icmr.nic.in/ijmr/2008/january/0112.pdf
8-http://www.ncbi.nlm.nih.gov/pmc/articles/PMC172876/pdf/080557.pdf
9-http://www.biology-online.org/articles/challenge_antibiotic_resistance_contemplate/evolution_resistance.html
10-http://www.wikidoc.org/index.php/Beta-lactam_antibiotic
