While there may not be a single "white paper" dedicated to this specific film, it is frequently discussed in the following contexts:
The movie is a supernatural horror set in 1976. It follows the Olmedo family, who move from the countryside to a large apartment at in Madrid, only to find that they are not alone in their new home. Academic and Analytical Context
Family trauma, urbanization, and historical memory.
The film is set during Spain's transition to democracy following the death of Francisco Franco. Scholars often analyze the "haunted house" trope in Spanish cinema as a metaphor for the country's repressed history and the lingering ghosts of the dictatorship.
The "paper" or research-worthy theme here is the "urban nightmare"—the idea that the dream of a better life in the city (leaving the rural poverty of the 70s) turns into a claustrophobic trap. Summary of the Movie's Basis Director: Albert Pintó. Setting: Madrid, 1976.
If you are looking for a or a critique , I can help you find specific film theory papers regarding "Spanish Gothic" or "Post-Franco Horror" that include this film as a primary case study.