Quick Links to Negative Interest Rates In The IS/LM Model Posted on February 26, 2015 by Theo Eicher Mankiw (Prof, Author, Bush Advisor) link 1, liink 2 Krugman (Prof, Author, Nobel) link 1, link 2 Tim Duy (Prof) link 1 Here is a link (and here) to a blog post talking about the IS/LM framework. You will find comments about Mankiw, Krugman, and others linked within the article.