Go to the advance search page in ScienceDirect and use the pull-down menu of the search box to select "References". The search results will indicate how many articles cite the original author.
Cited reference searching starts with a specific article, book, or other publication. Usually your first step is to find that publication in the database you are using. That may mean searching the title, but sometimes you'll use the author's name. Since citations for this publication can vary, expect the need to select from among variations or to perform multiple searches and combining the results.