A.N. Fernandes, L.H. Thomas, C.M. Altaner, P. Callow, V.T. Forsyth, D.C. Apperley, C.J. Kennedy and M.C. Jarvis. Nanostructure of cellulose microfibrils in spruce wood PNAS Plus published ahead of print November 7, 2011, doi:10.1073/pnas.1108942108.
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