@misc{10481/99210,
year = {2015},
url = {https://hdl.handle.net/10481/99210},
abstract = {Globally hyperbolic spacetimes admitting infinitely many causal (and timelike) homotopy classes of curves joining two prescribed points, are exhibited and discussed.},
title = {A note on the causal homotopy classes of a globally hyperbolic spacetime},
doi = {10.1088/0264-9381/32/19/197001},
author = {Morales Álvarez, Pablo and Sánchez Caja, Miguel},
}