Robert, Elisabeth M. R., Nele Schmitz, Paul Copini, Edo Gerkema, Frank J. Vergeldt, Carel W. Windt, Hans Beeckman, Nico Koedam, and Henk Van As. “Visualization of the Stem Water Content of Two Genera With Secondary Phloem Produced by Successive Cambia through Magnetic Resonance Imaging (MRI)”. Journal of Plant Hydraulics 1 (October 6, 2014): e006. Accessed March 5, 2024.