%0 conference lecture %@ %A Alexopoulos, N.D., Zeimpekis, V.S., Velonaki, Z., Gialos, A., Macheridou, S., Kashaev, N., Enz, J., Riekehr, S., Karanika, A., Marioli-Riga, Z. %D 2014 %J Greener Aviation 2014 %T Towards integral aeronautical laser beam welded structures from innovative Al-Li aluminium alloys; The trade-offs between manufacturing costs and the environmental footprint %U %X