Morgenstern, A., A. Ekholm, P. Scheewe, and K. Rumpunen. “Changes in Content of Major Phenolic Compounds During Leaf Development of Sea Buckthorn (Hippophaë Rhamnoides L.)”. Agricultural and Food Science, vol. 23, no. 3, Oct. 2014, pp. 207-19, doi:10.23986/afsci.9489.