1. IP P I t?1 , IP P I t?2 , and the interactions of ? log[Y /L] i,t with the fitted values of log UNC t?1 and log DIS t?1 , which are estimated from regressing each of the second moment measures in t ? 1 on the two lags of patent dispersion, and those of IP P I index;Dependent Variable: yearly firm-level investment-capital ratio in log log
2. Optimal Investment under Uncertainty;A B Abel;American Economic Review,1983
3. The Finance Uncertainty Multiplier