By Sheppard R.C.   in Trends in Biotechnology

ISSN:0167-7799|13|6|237-237

Elsevier‎(1995)‎

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By Cooper I J   Sheppard R C   in Optik – International Journal for Light and Electron Optics

ISSN:0030-4026|114|7|298-304

Urban & Fischer‎(2003)‎

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