APA (7th ed.) Citation

Abu-Zaid, I. T. M., & unknown. (1992). A finite difference approximation for a class of singular boundary value problems.

Chicago Style (17th ed.) Citation

Abu-Zaid, Issam Taher Mohammad, and unknown. A Finite Difference Approximation for a Class of Singular Boundary Value Problems. 1992.

MLA (9th ed.) Citation

Abu-Zaid, Issam Taher Mohammad, and unknown. A Finite Difference Approximation for a Class of Singular Boundary Value Problems. 1992.

Warning: These citations may not always be 100% accurate.