The book on lager brewing is Greg Noonan's New Brewing Lager Beer . . . but Greg is one of those Craftbrewers mentions (and started and operates the 7 Barrel Brewery) in the US . . .The book details the decoction mash pretty much perfectly, which dates it as Greg now only uses a single decoction. if at all.
TBH it is incredibly difficult to brew an American Standard Beer . . . OG 1.050use 30% rice (either Flaked or crushed and do a cereal mash), 15 IBU (Bud use 10-12 different varieties of hops some aged for three years) and pitch cold with a good large lager yeast starter and ferment cold.
There really is absolutely no where to hide any errors / faults in brewing technique with this style of beer