Preparation of DNA films for studies under vacuum conditions - The influence of cations in buffer solutionsM. A. Śmiałek, R. Balog, N. C. Jones, D. Field and N. J. MasonEur. Phys. J. D, 60 1 (2010) 31-36DOI: https://doi.org/10.1140/epjd/e2010-00082-y