@article{Simon:2016Id, author = "Simon, Vojtech and Pizzichini, Graziella and Hudec, René", title = "{Long gamma-ray bursts in the Swift era: the color indices of their optical afterglows }", doi = "10.22323/1.246.0063", journal = "PoS", year = 2016, volume = "MULTIF15", pages = "063" }