Help locating a magazine article

Cessnaflyer

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I was reading an article about the relationship with flying the best angle-of-attack for cruise and the air speed indicator. It had a few equations in the article that I am interested in finding. Does anyone know what magazine I found this in, or what equations they may have been referencing?
 

Cessnaflyer

Wooooooooooooooooooooooooooooooo
If I could define best, I believe it was a middle ground velocity between maximum range cruise speed and a maximum velocity for cruise for a piston power craft and using the airspeed indicator as a crude AoA indicator.

I think there might have also been reference to Vy in there as well. I tried searching the AOPA articles where I thought I saw it from but couldn't dig up a source.
 
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