Just looking up a few quick ones, not "attacking" you in any way or trying to show you up... just providing the information that I have gathered
Smolov is a squat cycle made for bringing up the legs in beginner weightlifters (not an "advanced" powerlifting routine LOL) and that is a lot of sets BUT puts the competition lifts aside apart from some long pulls to warm up
A sample training - LiftHard Chinese style here, you've probably seen this. We are looking at 11-15 sets of 2-5 reps for squats and another 10-14 sets of 1-3 reps for front squats
http://lifthard.com/wp-content/uploads/2012/09/Routine.png for a masters lifter, we are looking at at least 9 sets of front squats in the first 3 days of the week
From Pendlay:
A Training System for Beginning Olympic Weightlifters We are looking at 10 sets of squatting for a rank novice and 3 sets of front squats over 3 days. This is someone with no work capacity remember.
Going Russian:
Verkhoshansky Articles & Documents
"the volume of training loads achieved the limit of reasonableness. Today the professional athletes are training about 8 hours per day, 2-4 times during the day, near to 1,700 hours per year. It’s quite impossible imagine any further increase of load volume. We should look for models that assure a most rational use of the training loads over the year cycle" - The take home point here would be that volume increases until the limit of reasonableness which for you and I is simply time constraints.
An Interview With Sports Scientist Natalia Verkhoshansky | Bret Contreras - "The innovative idea of my father was to “concentrate” all the volume of barbell exercises, which was used by the athletes during the whole preceding preparation period, in an isolated training stage during which the athlete would not carry out other kinds of training loads (“strength block”). This “block” should be placed at the beginning of the preparation period and should be followed by the consecutive stages" - If you're far from competition, I think you should remain in the strength block as long as possible. In the above article from lifthard it is mentioned that as a novice more and more time is spend developing strength rather than displaying it until the strength level is suffice, but nobody really gets there until they hit elite so to stop worrying about it. Get your front squat up 20kg and your clean WILL increase at your level a lot faster than simply attacking the clean
Good quote here from Duane Hansen:
"I have found it useful in the long run to plan your heavy and light weeks of lifting. The plan that seems to work best is two heavy weeks (where you work as hard and heavy as you can manage) followed by an easy (or deload) week where you cut the total volume in half and rarely (if ever) lift a weight more than 80% of your best. The actual days during the heavy weeks have a bit of wiggle room. Some days you are on top of the world and can do anything. Other days will be not so good. The thing is to work hard enough each day during the heavy weeks (depending on how things are going that particular day) and force yourself to take it easy during the deload weeks." - Personally I think you won't need the deload weeks, you're simply not lifting enough! But it would be a good time to drop squatting volume and focus on the competition lifts more. For me I do a similar thing, I'll go nuts with volume for 2 weeks then drop the volume and up the intensity for 2 weeks. The main point is CONTRAST here, not "recovery".
Also on the Arminiens, however you spell their country name, like the Bulgarians it's important to see the development of the lifter. Yeah all they did was front squat the competition lifts and the power variations. But as a teenager they all did gymnastics and bodybuilding (I shit you not) and spend a lot of time doing a wide variety of different exercises to develop a complete motor map before cutting out exercises as they got more and more advanced
There is a lot more from sports outside of weightlifting but I wanted to keep it strictly weightlifting based here