REFERENCES
- Cimen , M. 2008 . Discussion of “A new drain spacing formula”. . Hydrol. Sci. J. , 53 ( 4 ) : 933 – 934 . (this issue)
- Mishra , G. C. and Singh , V. 2007 . A new drain spacing formula. . Hydrol. Sci. J. , 52 ( 2 ) : 338 – 351 .
- Simmons , G. F. and Robertson , J. S. 2003 . Differential Equations with Applications and Historical Notes. 539 New Delhi, , India : Tata McGraw-Hill Ltd .