Gupta. S.C, . (2004). Optical Fiber Communication & Appli. NULL: Prentice Hall of India.
Gupta. S.C, . 2004. Optical Fiber Communication & Appli. NULL: Prentice Hall of India.
Gupta. S.C, . Optical Fiber Communication & Appli. NULL: Prentice Hall of India. 2004.