@article{articlef955577a,
title   = {Interaction of oblique dark solitons in two-dimensional supersonic nonlinear Schrödinger flow},
author = {Annibale, E S and Gammal, A},
year = {2011},
doi = {10.1016/j.physleta.2011.10.027},
journal   = {PHYSICS LETTERS A}
}