Search Results Use the search box below to revise your search, or start a new search. Studies (2) Variables Publications Your query returned 2 studies. Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. 1. Is an Infrastructure Crisis Lowering the Nation's Productivity? (ICPSR 1078) Tatom, John A. 2. The P-Star Model in Five Small Economies (ICPSR 1086) Kool, Clemens J.M.; Tatom, John A.