SELECT DISTINCT t3.journalid  ,  t3.year FROM writes AS t2 JOIN author AS t1 ON t2.authorid  =  t1.authorid JOIN paper AS t3 ON t2.paperid  =  t3.paperid WHERE t1.authorname  =  "Donald E Knuth" GROUP BY t3.journalid  ,  t3.year ORDER BY t3.year DESC;
which journal did Donald E Knuth publish his last paper ?