  Conventional electron-phonon coupling induces either odd (triplet) or even
(singlet) pairing states in a time reversal and inversion invariant Dirac semi
- metal. In certain range of the chemical potential $\mu $ and parameters
characterizing the pairing attraction (effective electron-electron coupling
constant $\lambda $ and the Debye energy $T_{D}$) the energy of the singlet
although always lower, prevails by a very slim margin over the triplet. This
means that interactions that are small but discriminate between the spin
singlet and the spin triplet determine the nature of the superconducting order
there. It shown that in materials close enough to the Dirac point ($\mu
\lesssim T_{D}$) magnetic impurities stabilize the odd pairing superconducting
state.
