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Chica, Ana B.; Bartolomeo, Paolo; Lupiáñez, Juan (2013). "Two cognitive and neural systems for endogenous and exogenous spatial attention". Behavioural Brain Research. 237: 107–123. doi:10.1016/j.bbr.2012.09.027. PMID23000534. S2CID22314128.
Chica, Ana B.; Bartolomeo, Paolo; Lupiáñez, Juan (2013). "Two cognitive and neural systems for endogenous and exogenous spatial attention". Behavioural Brain Research. 237: 107–123. doi:10.1016/j.bbr.2012.09.027. PMID23000534. S2CID22314128.