[1]
PotapenkoI.V. 2011. On the reconstruction of the variation of the metric tensor of a surface on the basis of a given variation of christoffel symbols of the second kind under infinitesimal deformations of surfaces in the euclidean space $E_3$. Ukrains’kyi Matematychnyi Zhurnal. 63, 4 (Apr. 2011), 523-530.