Examples of literature of relevance to the design of cardboard coffee insulators:

• from google: froofy bit about starbucks coffee sleeves
• from google books: textbook on heat transfer. see page 69
• the US patent for the Starbucks coffee sleeve (from google patents)
• found via compendex finite element analysis of cardboard houses
• also from compendex, but not available via MIT's library system: design of a thermal pizza box