https://www.fidelity.com/webcontent/ap010098-etf-content/19.11.0/help/research/learn_er_quotes.shtml - Who is Recognia?

https://www.ibkrguides.com/traderworkstation/recognia-technical-indicators.htm - Recognia Technical Indicators

https://example.tradingcentral.com/documentation/api/overview.html - Recognia API Overview