Joanna, yes it should be possible. When you have the article on your screen, copy its URL on to your clipboard. Then when you are writing the message about the paper that you want to post on the forum, you can put the link into the appropriate part of the message by clicking on the little globe symbol (third from left on the second row of icons above the message panel) and then paste the clipboard URL into the gap between the two closing and opening brackets - ][