1. ACGIH (2008) Threshold limit values and biological exposure indices, Cincinnati, OH
2. Adhikari B, Bag MK, Bhowmick MK, Kundu C (2012) Rice in West Bengal-Rice Knowledge Management 88
3. Astrand PO, Rodhal K (1986) Threshold limit values and biological exposure indices. In: Text book of work physiology. McGraw Hill, New York
4. Brake R, Bates GA (2002) Valid method for comparing rational and empirical heat stress indices. Ann Occup Hyg 46:165–174
5. Chamoux A, Borel AM, Catilina P (1985) Pour la standardization D’unifrequence cardiaque de repos. Arch Mal Prof 46:241–250