Database: scholar
Question: Eric C. Kerrigan 's Liquid Automatica paper
SQL:
SELECT DISTINCT t2.paperid FROM paperkeyphrase AS t5 JOIN keyphrase AS t3 ON t5.keyphraseid  =  t3.keyphraseid JOIN writes AS t4 ON t4.paperid  =  t5.paperid JOIN paper AS t2 ON t4.paperid  =  t2.paperid JOIN author AS t1 ON t4.authorid  =  t1.authorid JOIN venue AS t6 ON t6.venueid  =  t2.venueid WHERE t1.authorname  =  "Eric C. Kerrigan" AND t3.keyphrasename  =  "Liquid" AND t6.venuename  =  "Automatica";