@article {Fischer-Heun/2009,
	title = {{Finding Range Minima in the Middle: Approximations and Applications}},
	journal = {Mathematics in Computer Science},
	volume = {3},
	number = {1},
	year = {2010},
	month = {March},
	pages = {17-30},
	keywords = {heun-group},
	doi = {10.1007/s11786-009-0007-8},
	author = {Johannes Fischer and Volker Heun}
}