Where to find valid version numbers for dependencies in Leiningen

Question

I'm new to Clojure and Leiningen, and I've determined that some of what I'll want to use is located in clojure.contrib.generic.math-functions. I found API information for that at http://richhickey.github.com/clojure-contrib/branch-1.1.x/math-api.html, but I can't find anything that helps me figure out what I should put into my project.clj file for that dependency.

I have tried [clojure.contrib.generic.math-functions "1.1"], [clojure.contrib.generic.math-functions "1.1.x"], and [clojure.contrib.generic.math-functions "1.1.0"]. For each of those, I get something like...

...
Caused by: org.apache.maven.artifact.resolver.MultipleArtifactsNotFoundException: Missing:
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1) clojure.contrib.generic.math-functions:clojure.contrib.generic.math-functions:jar:1.1