Nonparametric estimation of probability density functions for irregularly observed spatial data Zudi Lu Dag Bjarne Tjøstheim Publication details Journal: Journal of the American Statistical Association, p. 1546–1564, 2014 Link: DOI: doi.org/10.1080/01621459.2014.947376 You are here: Home Publications Scientific article Nonparametric estimation of probability density functions for irregularly observed spatial data