Neves, E.L. das, Silva, F.O. da, Teixeira, A.F.R. and Viana, B.F. 2006. Aspects of nesting biology and flower resource use by Xylocopa (Neoxylocopa) grisescens Lepeletier, 1841 (Hymenoptera: Apidae: Xylocopini) in continental sand dunes from medium San Francisco River, Bahia, Brazil. SITIENTIBUS série Ciências Biológicas. 6, 2 (Jun. 2006), 95–100. DOI:https://doi.org/10.13102/scb8162.