View Source ExTDLib.Object.PageBlockRelatedArticle (ExTDLib v0.0.4)

Contains information about a related article.

Name	Type	Description
url	string	Related article URL.
title	string	Article title; may be empty.
description	string	Article description; may be empty.
photo	photo	Article photo; may be null.
author	string	Article author; may be empty.
publish_date	number	Point in time (Unix timestamp) when the article was published; 0 if unknown.

More details on telegram's documentation.