WASET
    Reza Davoodi and  Jahangir Yadollahi Farsi and  Roya Naseri,  Necessity of using an Optimum Business Model in High-Tech Firms, Nanotechnology Case Study.   journal   = {International Journal of Industrial and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2012, vol. 61(1). 143 - 145
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/5282.