SUJIT, K. S.; BIBHAS, C. S. h-prime and h-semiprime ideals in $\Gamma_{N}$-semirings and Matrix Semiring $\left(\begin{array}{ll}R&\Gamma\\S&L\end{array}\right)$. Armenian Journal of Mathematics, v. 2, n. 3, p. 105–119, 25 Oct.2009.