@article {heckman1997line,
	title = {Line transects of two-dimensional random fields: Estimation and design},
	journal = {Canadian Journal of Statistics},
	volume = {25},
	number = {4},
	year = {1997},
	pages = {481{\textendash}501},
	publisher = {Wiley Online Library},
	author = {Heckman, Nancy and Rice, John}
}
