Mehri, B. (2001). NUMERICAL SOLUTION OF LINEAR AND NON-LINER POISSON S EQUATION. Sharif Journal of Civil Engineering, vol. 17(NO. 20), 62–69.

Mehri, B. "NUMERICAL SOLUTION OF LINEAR AND NON-LINER POISSON S EQUATION", Sharif Journal of Civil Engineering, vol. 17, NO. 20, 2001, 62–69.

Mehri, B. (2001). 'NUMERICAL SOLUTION OF LINEAR AND NON-LINER POISSON S EQUATION', Sharif Journal of Civil Engineering, vol. 17(NO. 20), pp. 62–69.

Mehri, B., "NUMERICAL SOLUTION OF LINEAR AND NON-LINER POISSON S EQUATION." Sharif Journal of Civil Engineering, vol. 17 NO. 20 (2001): 62–69,

Mehri B. NUMERICAL SOLUTION OF LINEAR AND NON-LINER POISSON S EQUATION. Sharif Journal of Civil Engineering. 2001;vol. 17(NO. 20):62–69 (In Persian).