ISIRI 6603 is a standard published by the Institute of Standards and Industrial Research of Iran (ISIRI) based on ISO 9565, and defines "Two – Wheeled Motorcycles – Parking Stability of Side – And Center – Stands".
Another source that was used in this standard is ISO 6726.
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- "پورتال سازمان ملی استاندارد ایران". Isiri.org. Retrieved 2012-05-21.
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