Thamir Hamoodi, F., Sabah Alwan, S. (2017). Apply the gravity model for trips between Najaf center and its settlements. , 28(2), 497-508.
Firas Thamir Hamoodi; Samah Sabah Alwan. "Apply the gravity model for trips between Najaf center and its settlements". , 28, 2, 2017, 497-508.
Thamir Hamoodi, F., Sabah Alwan, S. (2017). 'Apply the gravity model for trips between Najaf center and its settlements', , 28(2), pp. 497-508.
Thamir Hamoodi, F., Sabah Alwan, S. Apply the gravity model for trips between Najaf center and its settlements. , 2017; 28(2): 497-508.