@article{Beeli.2007,
 author = {Beeli, Gian and Esslen, Michaela and J\"{a}ncke, Lutz},
 year = {2007},
 title = {Frequency Correlates in Grapheme-Color Synaesthesia},
 pages = {788-792},
 volume = {18},
 number = {9},
 issn = {0956-7976},
 journal = {Psychological Science}
}