TY  - RPRT
TI  - Modeling volatility using state space models.
AU  - J Timmer
AU  - A S Weigend
PY  - 1997
DO  - 10.1142/s0129065797000392
UR  - https://pubmed.ncbi.nlm.nih.gov/9730016/
ID  - 9730016
ER  -