. (1974). A Resistance law for Extreme Natural Roughness in Pressure Pipes Based On Statistical Methods. (e26631). University College of Engineering, 29(0), e26631

. "A Resistance law for Extreme Natural Roughness in Pressure Pipes Based On Statistical Methods" .e26631 , University College of Engineering, 29, 0, 1974, e26631.

. (1974). 'A Resistance law for Extreme Natural Roughness in Pressure Pipes Based On Statistical Methods', University College of Engineering, 29(0), e26631.

, "A Resistance law for Extreme Natural Roughness in Pressure Pipes Based On Statistical Methods," University College of Engineering, 29 0 (1974): e26631,

. A Resistance law for Extreme Natural Roughness in Pressure Pipes Based On Statistical Methods. University College of Engineering. 1974;29(0):e26631 (In Persian).