TY  - RPRT
TI  - Variables aggregation in a time discrete linear model.
AU  - L Sanz
AU  - R Bravo de la Parra
PY  - 1999
DO  - 10.1016/s0025-5564(98)10079-2
UR  - https://pubmed.ncbi.nlm.nih.gov/10194926/
ID  - 10194926
ER  -