[1] E. Cartan:
Les espaces métriques fondés sur la notion d’aire. Exposés de Géometrie I, Paris, 1933.
Zbl 0008.27202
[2] S.S. Chern: Local equivalences and Euclidean connexes in Finsler spaces. Selected Papers II, Springer Verlag, 1989, pp. 194–212.
[4] J. Chrastina:
On formal theory of differential equations III. Mathematica Bohemica 116 (1991), 60–90.
MR 1100425 |
Zbl 0728.58041
[5] R.B.Gardner:
The method of equivalence and its application. CBMS-NSF Regional Conference Series in Appl. Mathematics 58, Philadelphia, 1981.
MR 1062197
[6] N. Kamran: On the equivalence problem of Élie Cartan. Academie Royale de Belgique, Mem. Cl. Sc., Collection in $8^0-2^{\text{e}}$ série, T. XLV-Fascicule 7 et dernier, 1989.