@article{article39b94ecb,
title   = {Minimal surfaces in Lorentzian Heisenberg group and Damek-Ricci spaces via the Weierstrass representation},
author = {Cintra, Adriana A and Mercuri, Francesco and Onnis, Irene Ignazia},
year = {2017},
doi = {10.1016/j.geomphys.2017.08.005},
journal   = {Journal of Geometry and Physics}
}