If go to google scholar citation from google , on the right hand side of the page title click + sign , add manually instruction will appear, click once again there then page will be opened . Fill up the information of the article /abstract, then finish with tick mark.
Mona Mosa You may add the article details in google scholar using 'add article manually' option. After following this procedure, automatically the abstract is detected online and will be added to our scholar page in most cases. I experienced this several times while adding my articles to google scholar.