Lovas, R., Pék, J., Szilasi, J.:
Ehresmann connections, metrics and good metric derivatives.
In: Finsler geometry, Sapporo 2005 : In memory of Makoto Matsumoto : Proceedings of the 40th Finsler symposium on Finsler geometry, Sapporo, Japan, September 6-10, 2005. Ed.: by Sorin V. Sabau, Hideo Shimada, Mathematical Society of Japan, Sapporo, 263-308, 2007, (Advanced Studies in Pure Mathematics ; 48.) ISBN: 9784931469426