Inhibition of bacterial adhesion and anti-biofilm effects of Bacillus cereus and Serratia nematodiphila biosurfactants against Staphylococcus aureus and Pseudomonas aeruginosa oleh Alireza Keyhanian, Mojgan Mohammadimehr, Farshad Nojoomi, Hamed Naghoosi, Mehdi Shakouri Khomartash, Mohsen Chamanara