Derivative Operators in Metric and Geometric Structures
  This paper (the seventh paper in a series of eight) continues the development of our theory of multivector and extensor calculus on smooth manifolds. Here we deal first with the concepts of ordinary Hodge coderivatives, duality identities, and Hodge coderivative identities. Then, we recall the concept of a Levi-Civita geometric structure and the concepts of Levi-Civita and gauge derivatives. New formulas that are important in the Lagrangian theory of multivector adn extensor fields are obtained. We introduce also he concept of covariant Hodge coderivative. We detail how all these concepts are related. 
V. V. Fernadez, A. M. Moya and W. A. Rodrigues Jr