Include the results of [paper](https://inspirehep.net/literature/2777853) on $P^{(3)}_{gq}$ both for our approximation and the FHMRUVV. For sake of clarity this has to be done after #354 is finished.
Include the results of paper on$P^{(3)}_{gq}$ both for our approximation and the FHMRUVV.
For sake of clarity this has to be done after #354 is finished.