Alves, A., S. F. Sendoya, and A. R. Rech. “Fortress With Sticky Moats: The Functional Role of Small Particles Around Tetragonisca Angustula Latreille (Apidae: Hymenoptera) Nest Entrance”. Sociobiology, vol. 65, no. 2, July 2018, pp. 330-2, doi:10.13102/sociobiology.v65i2.1272.