1 List the articles authored by John Smith 2 List the co-authors of John Smith (authors who co-authored an article with John Smith) 3 List the authors that have written no paper with John Smith 4. List the authors who have all their papers co-authored with John Smith 5. List the papers authored by only one author 6. which author co-authored at least 1 paper with every author (without aggregate functions) 7 List pairs (authorID and Name) of authors who have written at least one common paper