@article{article8cbdd652,
title   = {Nielsen theory on 3-manifolds covered by S (2) x R},
author = {Gonçalves, Daciberg Lima and Wong, Peter and Zhao, Xue Zhi},
year = {2015},
doi = {10.1007/s10114-015-3742-6},
journal   = {Acta Mathematica Sinica, English Series}
}