Ijjas, A.; Pretorius, F.; Steinhardt, P.J.; Sullivan, A.P.: The effects of multiple modes and reduced symmetry on the rapidity and robustness of slow contraction. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 820 (2021), 136490. DOI:
https://doi.org/10.1016/j.physletb.2021.136490