%0 Journal Article %A Yongli Zhang %A Shenglin Zhou %T Flag-transitive non-symmetric 2-designs with \((r, \lambda)=1\) and exceptional groups of Lie type %J The electronic journal of combinatorics %D 2020 %V 27 %N 2 %U http://geodesic.mathdoc.fr/articles/10.37236/8832/ %R 10.37236/8832 %F 10_37236_8832