This site shows you how to do broomstick crochet without the broomstick, and then it gives several more broomstick stitches. This is a good thing to know in case you do not have a broom stick and want to learn this stitch. It is a very beautiful stitch.
A crochet wavy long stitch with picture tutorial and diagrams. The original language is Turkish. It is like broomstick lace but a little different. They show a few ways of working open gaps, loops and lines with a hook and rod.