teamilk&sugar..your sarcastic answer is neither helpful nor profesional.
Bel Arg USA - thanks for your input, indeed your company SOP's are the way its done by most airlines. However, I'm looking for research papers on the subject which recommend the way your company (and everyone else) does it. A specific company's FOM or a manufacturers operating manual isnt quite enough because it isnt generic and it doesn't detail for example why method "A" is better than method "B".
I am aware that RL Sumwalt and others did considerable research on this subject a few years ago when he was at NASA Ames. I'm trying to access their papers online without success.