β-decay half-lives of 134,134mSb and their isomeric yield ratio produced by the spontaneous fission of 252Cf. - Siegl, K.; Kolos, K.; Scielzo, N. D.; Aprahamian, A.; Savard, G.; Burkey, M. T.; Carpenter, M. P.; Chowdhury, P.; Clark, J. A.; Copp, P.; Lane, G. J.; Lister, C. J.; et al. (Physical Review C, 2018)