@@ -1287,6 +1287,27 @@ @article{HanSar1980
12871287publisher={Elsevier}
12881288}
128912891290+@incollection{HanSar1991diff,
1291+title={Two difficulties in interpreting vector autoregressions},
1292+author={Hansen, Lars Peter and Sargent, Thomas J},
1293+booktitle={Rational Expectations Econometrics},
1294+editor={Hansen, Lars Peter and Sargent, Thomas J},
1295+chapter={4},
1296+year={1991},
1297+publisher={Westview Press}
1298+}
1299+1300+@article{Sims1980,
1301+title={Macroeconomics and reality},
1302+author={Sims, Christopher A},
1303+journal={Econometrica},
1304+volume={48},
1305+number={1},
1306+pages={1--48},
1307+year={1980},
1308+publisher={JSTOR}
1309+}
1310+12901311@book{Orfanidisoptimum1988,
12911312title={Optimum Signal Processing: An Introduction},
12921313author={Orfanidis, Sophocles J},