@article {Pollak1991-ad,
	title = {Sequential Detection of a Change in a Normal Mean when the Initial Value is Unknown},
	journal = {The Annals of Statistics},
	volume = {19},
	number = {1},
	year = {1991},
	month = {mar},
	publisher = {Institute of Mathematical Statistics},
	author = {Pollak, Moshe and Siegmund, D}
}
