If a researcher is going to be innovative and have beekeeping skills and money for flying tickets, he would collect from different countries wintering knowledge.
USA and Canada have very bad wintering knowledge. Yes, I know. Alaska Fairbanks University recommends to kill hives in autumn because they do not know how to keep hives alive.
UK, I know that their knowledge is amazingly miserable. To them +10C is severe weather. Insulation and dew point are unknown.
Russia over winter their bees with poor resources. Finland have quite new hives. Old "choosy" beehives have burned away. Mostly we use polystyrene.
Very essential question is bee strains which are able to over winter on "local" climatic conditions.
Of course our professionals have queens from France, China, Egypt, Russia and from what ever. But basics is in local queen genepool production.
It would be a huge work to collect wintering knowledge inside one book in different countries.
The guy must be very open minded and skillfull that he can see the things and reason why they do so.