1. Adriaens, Peter, EWM Stienen, Wouter Courtens, Marc Van De Walle, Nicolas Vanermen, Hilbran Verstraete, and D Verbelen. 2012. “Eindrapport Monitoring van de SBZ-V ‘Kustbroedvogels Te Zeebrugge-Heist’ En de SBZ-V ‘Poldercomplex’: Resultaten van Het Zevende Jaar (2011-2012) - Broedseizoen 2011 En Winterhalfjaar 2011/2012.” Instituut voor Natuur- en Bosonderzoek. https://pureportal.inbo.be/portal/nl/publications/eindrapport-monitoring-van-de-sbzv-kustbroedvogels-te-zeebruggeheist-en-de-sbzv-poldercomplex(e33c9b30-c2e5-4f5a-928c-1f1bdc056300).html.
2. Temporal and Age-Related Dietary Variations in a Large Population of Yellow-Legged Gulls Larus Michahellis: Implications for Management and Conservation;Alonso;European Journal of Wildlife Research,2015
3. Auguie, Baptiste. 2017. “GridExtra: Miscellaneous Functions for ‘Grid’ Graphics.” https://cran.r-project.org/package=gridExtra.
4. Bates, Douglas, Martin Maechler, Ben Bolker, and Steven Walker. 2019. “Lme4: Linear Mixed-Effects Models Using ‘Eigen’ and S4.” https://cran.r-project.org/package=lme4.
5. Gulls in urban environments : Landscape-level management to reduce conflict;Belant;Landscape and Urban Planning,1997