TY - JOUR A1 - Martín--Fernández, J.A. A1 - Barceló-Vidal, C. A1 - Pawlowsky-Glahn, V. T1 - Dealing with zeros and missing values in compositional data sets using nonparametric imputation Y1 - 2003 DO - 10.1023/A:1023866030544 JF - Mathematical Geology VL - 35 IS - 3 ER -