I am not aware of any article, but perhaps some of the other brothers and sisters at this site may know of some.I use a very simple system. It works well, and my teams have always responded well to it. Most songs have simple structures such as verses, chorus, bridge, solo, etc. To signal my musicians I prefer subtle hand signals. I generally hold an arm slightly away from my side, with my hand pointing toward the floor to signal the team.
I use an upside V (extend the index finger and middle finger) to indicate we are going into a verse. I use a cupped hand (forming the letter C) to indicate a chorus. I use the OK sign (index finger curled to meet the thumb) to indicate a bridge. I use a closed fist to end a song. I extend an index finger and use a slight circular motion (like stirring an ice cube) to indicate that we are going to continue to vamp something. E.g. we are approaching the end of a song but I want to keep going. To start an instrumental solo, I just glance at the soloist. If you are landing a helicopter or something in your service, I'm afraid that is out of my league.
Over the years I've been blessed to work with many talented musicians. None of them have had any difficulty in working with these simple signals. The difficulty these days is not in comunicating with musicians, it is communicating with the people operating the computer equipment. That's a horse of a different color.
Now being that you are in Austrailia and I'm in America, you'll have to figure out if you point your hand down toward the floor whether it is actually pointing up.
Hope this helps you Brother.