Saarela, S., Vuori, M., Eloranta, E. and Vakkuri, O. (1999) “Melatonin, a candidate signalling molecule for energy sparing”, Ornis Fennica, 76(4), pp. 231–235. Available at: https://ornisfennica.journal.fi/article/view/133518 (Accessed: 25November2024).