Fr. Louis Bouyer was a French Catholic convert, liturgist and theologian who played an important if often sidelined role in the liturgical reforms of the late 1960s, popularized the term "Paschal Mystery", and was otherwise influential in the era of the Second Vatican Council. He would have been made a cardinal, had he not turned the honour down.
And all we have of his in Faithlife's collection so far is a single lonely article.
Here's a partial list of his works in English. I can personally recommend The Fourth Gospel, his excellent commentary on the Gospel of John.
