@article{PismaZhETF.19.55, title = {Relativistic expansion of amplitudes and the parton model}, author = {Smorodinskii, Ya. A.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {19}, issue = {1}, pages = {55}, year = {1974}, doi = {}, url = {http://jetpletters.ru/ps/0/article_26943.shtml}, }