src/edu/kit/informatik/literatur_system/Publication.java
/**
     * Gets the publications that reference to this, where the given author didn't worked
     * @param author the author to check
     * @return the collection of foreign references for this, in which the given author didn't worked
     */
Gets the publications that reference to this, where the given author didn't worked
@param author the author to check
@return the collection of foreign references for this, in which the given author didn't worked
Gets the publications that reference to this where the given author didn ' t worked @param author the author to check @return the collection of foreign references for this in which the given author didn ' t worked
public Collection<Publication> foreignReferencesWithoutAuthor(final Author author) {
        return referenceToThis.values().stream()
                .filter(x->!x.hasAuthor(author))
                .collect(Collectors.toList());
    }
public Collection < Publication > foreignReferencesWithoutAuthor ( final Author author ) { return referenceToThis . values ( ) . stream ( ) . filter ( x -> ! x . hasAuthor ( author ) ) . collect ( Collectors . toList ( ) ) ; }
Gets the publications that reference to this, where the given author didn't worked
 @param author the author to check
 @return the collection of foreign references for this, in which the given author didn't worked
Gets the publications that reference to this where the given author didn ' t worked @param author the author to check @return the collection of foreign references for this in which the given author didn ' t worked