Frieler, K., Fischinger, T., Schlemmer, K., Lothwesen, K., Jakubowski, K., & Mullensiefen, D. (2013). Absolute memory for pitch: A comparative replication of Levitin's 1994 study in six European labs. Musicae Scientiae, 17(3), 334-349. doi:10.1177/1029864913493802.