Koskinen Lars-Owe D., Koch Mona L., and Svedberg Jan. 2000. “Cerebrovascular Effects of the TRH Analogues PGlu-3-Methyl-His-Pro Amide and PGlu-Glu-Pro Amide: A Comparison With TRH”. Upsala Journal of Medical Sciences 105 (1):73-84. https://doi.org/10.1517/03009734000000049.