@inproceedings{Madsen:2006lW, author = "Madsen, J.", title = "{Stable quark matter in cosmic rays ? }", doi = "10.22323/1.022.0010", booktitle = "Proceedings of 29th Johns Hopkins Workshop on current problems in particle theory: strong matter in the heavens {\textemdash} PoS(JHW2005)", year = 2006, volume = "022", pages = "010" }