%0 Journal Article %A Adamec, Ladislav %T A note on the fundamental matrix of variational equations in $\mathbb{R}^3$ %J Mathematica Bohemica %D 2003 %P 411-418 %V 128 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.2003.133999/ %R 10.21136/MB.2003.133999 %G en %F 10_21136_MB_2003_133999