If you are taking a linguistic approach, the literal word "crisis" could be examines as it relates to actors' relationship to the term itself. If you are more concerned with entities, like media outlets strategically deploying 'crisis' as a means of 'drumming-up' enthusiasm you would be well suit to look at the following:

A sign of war: The strategic use of violent imagery in contemporary Lebanese political rhetoric -Diane Riskedahl

Axes of Evals: Token versus Type Interdiscursivity - Michael Silverstein

I hope these provide a different perspective that may be useful. Cheers.

I might direct you to some articles in the issue:

Risk-analysis - a field within security studies : European journal of IR - Petersen

Security, technologies of risk and the political, guest editor's introduction - Security dialoge, Claudia aradau, rens van muster

Did you check with history of concepts? They have been and still are publishing a lot on this kind of concept. Well, mostly centered in the 19th century, but there could be something for you. Here are really many links, maybe in some of the journals or books there you can find something on crisis as a concept: http://www.concepta-net.org/links

Yeah, actually I found a text:

Michela Richter and Reinhart Koselleck, “Crisis”

From Journal of the History of Ideas 67 (2006) [restricted access via Project Muse]

Thanks to all of you. Very helpful!. Cheers

Do you know "Sociology of political crisis" whose author is Michel Dobry? Unfortunately, I know the french and spanish versions of this book, a very interesting one (theoretically and conceptually). Best

Thanks, Alfredo, I'll sercrh for it!