References Gear

bibliography

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norton, robert l. (2004), design of machinery (3rd ed.), mcgraw-hill professional, isbn 978-0-07-121496-4. 
vallance, alex; doughtie, venton levy (1964), design of machine members (4th ed.), mcgraw-hill. 
industrial press (2012), machinery s handbook (29th ed.), isbn 978-0-8311-2900-2