@article{Krein:20141w, author = "Krein, Gastao", title = "{Dressed perturbation theory: a perturbative approach to Dyson-Schwinger and Bethe-Salpeter equations in QCD}", doi = "10.22323/1.193.0021", journal = "PoS", year = 2014, volume = "QCD-TNT-III", pages = "021" }