@article{ShojaeiFard2014,
  author    = {Shojaei-Fard, Ali},
  title     = {Counterterms in the context of the universal Hopf algebra of renormalization},
  series = {International journal of modern physics : A, Particles and fields, gravitation, cosmology, nuclear physics},
  volume    = {29},
  journal   = {International journal of modern physics : A, Particles and fields, gravitation, cosmology, nuclear physics},
  number    = {8},
  publisher = {World Scientific},
  address   = {Singapore},
  issn      = {0217-751X},
  doi       = {10.1142/S0217751X14500456},
  pages     = {15},
  year      = {2014},
  abstract  = {The manuscript discovers a new interpretation of counterterms of renormalizable Quantum Field Theories in terms of formal expansions of decorated rooted trees.},
  language  = {en}
}
@article{ShojaeiFard2013,
  author    = {Shojaei-Fard, Ali},
  title     = {The global beta-functions from solutions of dyson-schwinger equations},
  series = {Modern physics letters : A, Particles and fields, gravitation, cosmology, nuclear physics},
  volume    = {28},
  journal   = {Modern physics letters : A, Particles and fields, gravitation, cosmology, nuclear physics},
  number    = {34},
  publisher = {World Scientific},
  address   = {Singapore},
  issn      = {0217-7323},
  doi       = {10.1142/S0217732313501526},
  pages     = {12},
  year      = {2013},
  abstract  = {We apply the geometric interpretation of Dyson-Schwinger equations (DSEs) in terms of equi-singular flat connections to provide a process which relates beta-functions of a DSE under different regularization schemes.},
  language  = {en}
}