books.google.com - Since the publication of F. R. Palmer's Mood and Modality in 1986, when the topic of "modality" was fairly unfamiliar, there has been considerable interest in the subject as well as in grammatical typology in general. Modality is concerned with mood (subjunctive etc.) and with modal markers such as English...http://books.google.com/books/about/Mood_and_Modality.html?id=xKUvDFTARR8C&utm_source=gb-gplus-shareMood and Modality
