@inproceedings{Alcolea:2009yl, author = "Alcolea, Javier", title = "{Scales and orders of magnitude in Astronomy}", doi = "10.22323/1.065.0001", booktitle = "Proceedings of 2nd MCCT-SKADS Training School. Radio Astronomy: fundamentals and the new instruments {\textemdash} PoS(2nd MCCT-SKADS)", year = 2009, volume = "065", pages = "001" }