@article{SIGMA_2023_19_a34,
     author = {Jos\'e Figueroa-O'Farrill and Ross Grassie and Stefan Prohazka},
     title = {From {pp-Waves} to {Galilean} {Spacetimes}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2023},
     volume = {19},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2023_19_a34/}
}