All of this on-line searching reminds me that my friend and hero, Fr Stephen L. Brock, has a webpage at the website for the Philosophy Faculty at the Pontificia Università della Santa Croce, the Opus Dei university in Rome. Fr Brock and I were school-mates in Toronto. His webpage has a list of his many publications, for most of which you can download PDF versions of the article. In fact, there is a PDF file of his important doctoral dissertation, defended back in the stone-age of the Internet (1988): The Legal Character of Natural Law according to St. Thomas Aquinas.
The articles you’ll find are primarily in the fields of ethics and metaphysics, as well as some reviews he has done of others’ writings. Helpfully the downloaded PDFs agree with the pagination of the journals in which the article or review appeared, such that you can download the PDF and use it, citing its pagination.