Azimuthal correlations of D-mesons in p+p and p+Pb collisions at LHC energies M. Younus, S. K. Tripathy, P. K. Sahu and Z. Naik Eur. Phys. J. A, 53 5 (2017) 112 Published online: 31 May 2017 DOI: 10.1140/epja/i2017-12305-7