Media type: E-Article Title: On Approximating the Gradient of the Value Function Contributor: Dmitriev, Alexandre Published: Scientific Research Publishing, Inc., 2019 Published in: Theoretical Economics Letters, 9 (2019) 1, Seite 126-138 Language: Not determined DOI: 10.4236/tel.2019.91011 ISSN: 2162-2078; 2162-2086 Origination: Footnote: Access State: Open Access