%0 Journal Article %A Chen, Pingge %A Liang, Jinhua %A Peng, Yuejian %T The Lagrangian Density of {123, 234, 456} and the TurĂ¡n Number of its Extension %J Discussiones Mathematicae. Graph Theory %D 2021 %P 905-921 %V 41 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGT_2021_41_4_a3/ %G en %F DMGT_2021_41_4_a3