@article{article1bb1f4f7,
title   = {Closed 3-dimensional hypersurfaces with constant mean curvature and constant scalar curvature},
author = {Almeida, Sebastião C. de and Brito, Fabiano Gustavo Braga},
year = {1990},
doi = {10.1215/s0012-7094-90-06109-5},
journal   = {Duke Mathematical Journal}
}