1. MSME-development Institute,Technology study report on Bearing Industry,Ministry of Micro Small and Medium Enterprises,Government of India –www.dcmsme.gov.in.
2. Bearings Market Size, Share & Trends Analysis Report By Product, By Application (Automotive, Agriculture, Electrical, Mining & Construction, Railway & Aerospace, Automotive Aftermarket), By Region, And SegmentForecasts,2021–2028,ReportID:978-1-68038-373- https://www.grandviewresearch.com/industry-analysis/bearings-market
3. Management department, university of Turin, C.so Unione Sovietica 218 bis, Torino 10134, Italy, smart factory per formance and industry 4.0;Büchi;Technol. Forecast. Social Change,2020
4. https://trends.google.com/trends/explore?date=2011-01-01%202021-12-31&q=smart%20factory Statistics from Google Trends (Search keywords: “Smart Factory”; Date: 17th May 2022).
5. https://trends.google.com/trends/explore?date=2011-01-01%202021-12-31&q=Smart%20Manufacturing%20and%20IOT Statistics from Google Trends (Search keywords: “Smart Manufacturing and IOT ,Date: 17th May 2022).