@article{01858842,
title = {The concept of invariant geometry of second order.},
journal = {Balkan Journal of Geometry and its Applications (BJGA)},
volume = {7},
year = {2002},
pages = {57-66},
zbl = {1027.53091},
language = {en},
url = {http://dml.mathdoc.fr/item/01858842}
}
Păun, Marius. The concept of invariant geometry of second order.. Balkan Journal of Geometry and its Applications (BJGA), Tome 7 (2002) pp. 57-66. http://gdmltest.u-ga.fr/item/01858842/