TY - JOUR T1 - Waves and null congruences in a draining bathtub JO - International Journal of Modern Physics D UR - https://eprints.whiterose.ac.uk/id/eprint/107653 UR - https://doi.org/10.1142/S0218271816410042 PY - 2016/08/01 AU - Dempsey D AU - Dolan SR ED - DO - DOI: 10.1142/S0218271816410042 PB - World Scientific Publishing VL - 25 IS - 9 Y2 - 2025/11/30 ER -