Linse, Lisbeth, et al. “Boron Fertilisation of Organically Managed Grass-Clover Swards on Coarse-Textured Soils: Effects on Botanical and Element Composition”. Agricultural and Food Science, vol. 24, no. 4, Dec. 2015, pp. 261–272, https://doi.org/10.23986/afsci.51469.