Algorithm for IRF confidence intervals

[exkiwicber]

Can you tell me if you have written down somewhere algorithms you are using to
compute impulse response function confidence intervals? I can't seem to
find it in the Eviews manuals?

If not, what about article citations that you relied on?

Thanks

[EViews Glenn]

Lütkepohl, Helmut (1991). Introduction to Multiple Time Series Analysis, New York: Springer-Verlag. p.97ff