The non-indigenous medusa Blackfordia virginica (Hydrozoa, Leptothecata) in tropical Brazil: 50 years of unnoticed presence.Published in:Biological Invasions, 2014, v. 16, n. 1, p. 1, doi. 10.1007/s10530-013-0496-xBy:Freire, Milena;Genzano, Gabriel;Neumann-Leitão, Sigrid;Pérez, CarlosPublication type:Article