@inbook {470,
	title = {Optimization of space-time sampling designs under the universal kriging model},
	booktitle = {Spatio-temporal design: Advances in efficient data acquisition},
	year = {Submitted},
	publisher = {Wiley},
	organization = {Wiley},
	author = {Heuvelink, G.~B.~M. and Melles, S.~J. and Hengl, T. and Griffith, D.},
	editor = {Jorge Mateu Mahiques and Werner Muller}
}