Cook, W.G.; Glushchenko, I.A.; Ijjas, A.; Pretorius, F.; Steinhardt, P.J.: Supersmoothing through slow contraction. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 808 (2020), 135690. DOI:
https://doi.org/10.1016/j.physletb.2020.135690