I'm able to post a message with a link using stream.publish and the author of posts is a page itself as needed. But the links are not included in links feed e.g. https://graph.facebook.com/113996318619716/links or just a "Links" box on the fan page.
The reason I need posts to be included in links feed is the relationship with Like button on the website. If users "like" the links published by a page those "likes" are also transferred to the website.
Thank you!