@article{Calvin1989,
	title = {A method for constructing variance balanced designs},
	author = {James A. Calvin and Kishore Sinha},
	journal = {Journal of Statistical Planning and Inference},
	month = {Sep},
	number = {1},
	pages = {127--131},
	url = {http://www.sciencedirect.com/science/article/B6V0M-45DHJ1J-X/1/d64b765ca3fe53be424b8269562b5060},
	volume = {23},
	year = {1989},
	biburl = {http://www.bibsonomy.org/bibtex/20481dbc1c4bf2869abb142a90a76f8d5/smicha},
	keywords = {Balanced block designs incomplete }
}