Stata Journal volume 9, issue 3 t .. Other Stata Journals p gr0038 Graphical representatin of multivariate data using p - Chernoff faces p st0067_4 Update: Multiple imputation of missing values p st0169 Confirmatory factor analysis p st0171 Implementing weak instrument robust tests for a p - general class of instrumental variables models p st0172 A seasonal unit root test with STATA p st0173 MM-robust regression p st0174 Epps-Singleton two-sample empirical characteristic p - function test