Constraints on the symmetry energy from observational probes of the neutron star crust William G. Newton, Joshua Hooker, Michael Gearheart, Kyleah Murphy, De-Hua Wen, Farrukh J. Fattoyev and Bao-An Li Eur. Phys. J. A, 50 2 (2014) 41 Published online: 27 February 2014 DOI: 10.1140/epja/i2014-14041-x