Need online web research to build a collection of reference materials supporting a research objective

Hello, I am looking for expert online research to build a collection of reference materials such as online links, online PDFs, published books, regulatory filings, academic journals/literature that will support my research into the market size and opportunity for specific style of technical analysis used in financial markets known as Market Profile. I will be giving some background and links to Market Profile at the end of this description. I am looking for reference material for the following research objectives: a) Please provide at least 5 references that discuss the number of subscribers of any one of the following leading trading software vendors: CQG, TradeStation, TradeNavigator, NinjaTrader, Sierra Trading. The references must not be older than 10 years. as an example here is a filing from TradeNavigator's 10K: [login to view URL] Look at the section headlined "TradeStation’s Average Client Trades 391 Times", immediately above the line there are details on number of accounts. This is the quality of reference material that is acceptable as a submission. b) Please provide at least 5 references that discuss the number of subscribers from any one of the following: CQG, TradeStation, TradeNavigator, NinjaTrader, Sierra Trading who use Market Profile as a trading strategy or pay additional fees for Market Profile add-ons/subscriptions. c) Please provide at least 5 references that discuss the prevalence, usage or popularity of Market Profile as an investment strategy in the trading community - retail or institutional, CTA (Commodity Trading Advisors), Hedge Funds, Alternative Asset Managers. Are there any materials that discuss the volume of traders/asset managers that use Market Profile as their only investment strategy or primary strategy? d) Please provide at least 5 references that discuss the number of software companies and data vendors that offer Market Profile data and Charting services. For this objective alone, I can accept a list of companies in lieu of reference material but the list has to have at least 100 names. All reference material above should reference the North American market - (US, Canada). I will not consider reference materials for Japan or Europe. A description of Market Profile can be found on Wikipedia at the link: [login to view URL] - This link will give you certain keywords such as Value Area, TPOs, PoC that can be used to develop your online search strategy. Market Profile is a smaller subset of the broader subject of Technical Analysis: [login to view URL]