Journal of Mathematical Sciences: Advances and Applications[1] L. A. Cordero, C. T. J. Dobson and M. De León, Differential
Geometry of Frame Bundles, Kluwer Academic Publishers, 1989.
[2] J. Gancarzewicz, W. M. Mikulski and Z. Pogoda, Lifts of some
tensor fields and connections to product preserving functors, Nagoya
Math. J. 135 (1994), 1-14.
[3] I. Kolář, Covariant approach to natural transformations of Weil
bundles, Comment. Math. Univ. Carolin. 27 (1986), 723-729.
[4] I. Kolář, On the natural operators on vector fields, Ann. Global
Anal. Geom. 6 (1988), 119-117.
[5] I. Kolář and M. Modugo, Torsions of connections on some natural
bundles, Diff. Geom. and its Appl. 2 (1992), 1-16.
[6] I. Kolář, J. Slovák and P. W. Michor, Natural Operations in
Differential Geometry, Springer-Verlag, Berlin, Heidelberg, 1993.
[7] W. M. Mikulski, Product preserving gauge bundle functors on vector
bundles, Colloquium Math. 90(2) (2001), 277-285.
[8] A. Ntyam and K. J. Wouafo, New versions of curvature and torsion
formulas for the complete lifting of a linear connection to Weil
bundles, Ann. Pol. Math. 82(3) (2003), 133-140.
[9] A. Ntyam and A. Mba, On natural vector bundle morphisms 
over 
Ann. Pol. Math. 96(3) (2009), 295-301.
[10] A. Ntyam, A classification of natural vector bundle morphisms
over 
Journal of Mathematical Sciences: Advances
and Applications 21 (2013), 49-59.
