1016/0030-5073(77)90001-0 Merkle, E. C. The disutility of the hard-easy effect in choice confidence. Psychonomic Bulletin & Review. 2009, 16 (1): 204–213
1095/biolreprod40.2.197. (原始内容存档于2008-11-22). Relaxin' the Heart: A Novel Therapeutic Modality. Journal of Cardiovascular Pharmacology and Therapeutics. July 2016, 21