Progress in computing parton distribution functions from the quasi-PDF approachConstantia Alexandrou, Krzysztof Cichy, Martha Constantinou, Kyriakos Hadjiyiannakou, Karl Jansen, Haralambos Panagopoulos, Aurora Scapellato and Fernanda SteffensEPJ Web Conf., 175 (2018) 06021DOI: https://doi.org/10.1051/epjconf/201817506021