src/edu/kit/informatik/literatur_system/Publication.java
/**
     * Associates a new author to this
     * @param author the author to associate to this
     */
Associates a new author to this
@param author the author to associate to this
Associates a new author to this @param author the author to associate to this
public void addAuthor(final Author author) {
        if (authors.containsKey(author))
            throw new IllegalArgumentException("this publication is already associated to the given author");
        authors.put(author, author);
    }
public void addAuthor ( final Author author ) { if ( authors . containsKey ( author ) ) throw new IllegalArgumentException ( "this publication is already associated to the given author" ) ; authors . put ( author , author ) ; }
Associates a new author to this
 @param author the author to associate to this
Associates a new author to this @param author the author to associate to this
//TODO improve error message