@article{paperid:1061935, author = {M. Momeni-Feili and F. Arash and Taghavi Shahri, Seyyedeh Fatemeh and A. Shahveh}, title = {Contribution of orbital angular momentum to the nucleon spin}, journal = {International Journal of Modern Physics A}, year = {2017}, volume = {32}, month = {March}, issn = {0217-751X}, pages = {1750036--1750036}, numpages = {0}, keywords = {valon model; orbital angular momentum; parton; spin}, }