@article {PerkovicDS95,
	title = {Avalanches, {B}arkhausen noise, and plain old criticality},
	journal = {Physical Review Letters},
	volume = {75},
	year = {1995},
	pages = {4528-4531},
	author = {Perkovic, O. and Dahmen, K. and Sethna, J. P.}
}
