Singlet scalar dark matter in U(1)B-L models without right-handed neutrinos Shivaramakrishna Singirala, Rukmani Mohanta and Sudhanwa Patra Eur. Phys. J. Plus, 133 11 (2018) 477 Published online: 27 November 2018 DOI: 10.1140/epjp/i2018-12270-0