(en) Tsujita, Sakai et Kikuzawa, « Does individual variation in fruit profitability override color differences in avian choice of red or white Ilex serrata fruits? », Ecological Research, vol. 23, no 2, , p. 445–450 (ISSN0912-3814, DOI10.1007/s11284-007-0396-6, S2CID36582457, lire en ligne)
(en) Tsujita, Sakai et Kikuzawa, « Does individual variation in fruit profitability override color differences in avian choice of red or white Ilex serrata fruits? », Ecological Research, vol. 23, no 2, , p. 445–450 (ISSN0912-3814, DOI10.1007/s11284-007-0396-6, S2CID36582457, lire en ligne)
(en) Tsujita, Sakai et Kikuzawa, « Does individual variation in fruit profitability override color differences in avian choice of red or white Ilex serrata fruits? », Ecological Research, vol. 23, no 2, , p. 445–450 (ISSN0912-3814, DOI10.1007/s11284-007-0396-6, S2CID36582457, lire en ligne)
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(en) Tsujita, Sakai et Kikuzawa, « Does individual variation in fruit profitability override color differences in avian choice of red or white Ilex serrata fruits? », Ecological Research, vol. 23, no 2, , p. 445–450 (ISSN0912-3814, DOI10.1007/s11284-007-0396-6, S2CID36582457, lire en ligne)