?url_ver=Z39.88-2004&rft_id=doi%3A10.1007%2Fs11743-001-0187-z&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Makkar%2C+R+S&rft.aulast=Makkar&rft.aufirst=R+S&rft.issue=4&rft.volume=4&rft.date=2001&rft.issn=1097-3958&rft.atitle=Synthesis+of+enhanced+biosurfactant+by+Bacillus+subtilis+MTCC+2423+at+45%C2%B0C+by+foam+fractionation&rft.title=Journal+of+Surfactants+and+Detergents&rft.pages=355-357&rft.genre=article