Effect of surfactant alkyl chain length on lyotropic uniaxial to biaxial cholesteric phase transitionsErol Akpinar, Nazli Uygur, Seda Uyanik and Antônio Martins Figueiredo NetoEur. Phys. J. E, 42 9 (2019) 128DOI: https://doi.org/10.1140/epje/i2019-11893-8