Salazar CA, Jiggins CD, Arias CF, Tobler A, Bermingham E, Linares M (2005). "Hybrid incompatibility is consistent with a hybrid origin of Heliconius heurippa Hewitson from its close relatives, Heliconius cydno Doubleday and Heliconius melpomene Linnaeus". J. Evol. Biol. 18 (2): 247–56. CiteSeerX10.1.1.499.7777. doi:10.1111/j.1420-9101.2004.00839.x. PMID15715831.
Salazar CA, Jiggins CD, Arias CF, Tobler A, Bermingham E, Linares M (2005). "Hybrid incompatibility is consistent with a hybrid origin of Heliconius heurippa Hewitson from its close relatives, Heliconius cydno Doubleday and Heliconius melpomene Linnaeus". J. Evol. Biol. 18 (2): 247–56. CiteSeerX10.1.1.499.7777. doi:10.1111/j.1420-9101.2004.00839.x. PMID15715831.
Salazar CA, Jiggins CD, Arias CF, Tobler A, Bermingham E, Linares M (2005). "Hybrid incompatibility is consistent with a hybrid origin of Heliconius heurippa Hewitson from its close relatives, Heliconius cydno Doubleday and Heliconius melpomene Linnaeus". J. Evol. Biol. 18 (2): 247–56. CiteSeerX10.1.1.499.7777. doi:10.1111/j.1420-9101.2004.00839.x. PMID15715831.