C. Mollereau-Manaute, L. Moulédous, M. Roumy, K. Tsutsui, T. Ubuka, and J.-M. Zajac, “Neuropeptide FF/neuropeptide AF receptors (version 2019.4) in the IUPHAR/BPS Guide to Pharmacology Database”, GtoPdb CITE, vol. 2019, no. 4, Sep. 2019.