Bloody Relations
https://www.newyorker.com/magazine/2001/12/17/bloody-relations
A review of the film in The New Yorker.
A Visual Analysis of Wes Anderson's The Royal Tenenbaums
http://www.fusionmagazine.org/a-visual-analysis-of-wes-andersons-the-royal-tenenbaums/
An analysis of the aesthetics and visual elements of the film.
How Wes Anderson Made The Royal Tenenbaums
http://www.vulture.com/2013/10/how-wes-anderson-made-the-royal-tenenbaums.html
An article in Vulture about the making of the film.
Wes Anderson
https://film.avclub.com/wes-anderson-1798215291
An interview with Wes Anderson in The Onion AV Club.
28 Things You Might Not Have Known About The Royal Tenenbaums
http://mentalfloss.com/article/61053/28-things-you-might-not-have-known-about-royal-tenenbaums
Trivia about the film in a list for Mental Floss.