Here is a small sampling of articles that may be found by searching articles databases such as the ATLA Religion Database, which is a good place to begin. You can try a simple keyword search for Advent or you can use the scripture index to search for articles on scripture passages that are part of the Advent liturgies for each year.
Quick Sample of Articles
"The Habit of Advent: What Habits Do You Have That Generate Hope?" Berger, Rose Marie.
"Advent: Departure and Homecoming." Brueggemann, Walter.
"An Advent Gift: The Eschatological Promise." Byars, Ronald P.
"African American Advent and Christmas spirituals." Costen, Melva Wilson.
"The feast of the Virgin of Guadalupe and the season of Advent." Johnson, Maxwell E.
"Liturgical dance: the centuries-old partnership of dance and religion remains vital during this holiday season." Kent, Linda, and Joanne Tucker.
"Back to the Future: The Eschatological Vision of Advent." O'Day, Gail R.