Achen MG, Jeltsch M, Kukk E, Mäkinen T, Vitali A, Wilks AF, u. a.. Vascular endothelial growth factor D (VEGF-D) is a ligand for the tyrosine kinases VEGF receptor 2 (Flk1) and VEGF receptor 3 (Flt4). Proc Natl Acad Sci U S A [Internet]. 1998;95(2):548 - 53. http://view.ncbi.nlm.nih.gov/pubmed/9435229