@article{BonseHoehmRosenfeldetal.2013, author = {J{\"o}rn Bonse and S. H{\"o}hm and A. Rosenfeld and J{\"o}rg Kr{\"u}ger}, title = {Sub-100-nm laser-induced periodic surface structures upon irradiation of titanium by Ti:sapphire femtosecond laser pulses in air}, journal = {Applied physics A}, volume = {110}, number = {3}, pages = {547 -- 551}, doi = {10.1007/s00339-012-7140-y}, year = {2013}, }