If the website address is not provided in the paper, you can try the following methods to obtain relevant information. First of all, you can contact the author of the paper or relevant research institutions and ask if there are other ways to obtain the paper. Secondly, you can try to search the title, author or keywords of the paper in academic search engines or databases to see if you can find the relevant abstract or full text. Moreover, you can also try to seek the help of other researchers or scholars through academic exchange platforms, academic forums or social media.