BCCI asks ball makers to recheck quality, SG promises improvement
Firstpost Explains: What is a Smart Ball – the 'ball with a microchip' – set to be used for first time in professional league? - Firstcricket News, Firstpost
From tannery to Test: the process involved in producing a cricket ball | Cricket | The Guardian
Cricket Ball History, Color, Structure, Dimension and Evolution - Sportskeeda