Charge density and conductivity of disordered Berry-Mondragon graphene nanoribbons Carlota G. Beneventano, Ignat Fialkovsky, Eve Mariel Santangelo and Dmitri V. Vassilevich Eur. Phys. J. B, 87 3 (2014) 50 Published online: 03 March 2014 DOI: 10.1140/epjb/e2014-40990-x