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I created this as it's obvious that it needs a page (currently there are no other references on the English WP). There is a Portuguese-language page here. I don't know when I will be able to do any more on it but hopefully others will drop by and improve it. There aren't many references to this in English but I've cited two that I found. There is a link here to what sounds like a very informed article but it requires a subscription. asnac ( talk) 09:09, 20 December 2017 (UTC) reply