@article{3855, author = {Vasily Kravtsov and Ronald Ulbricht and Joanna Atkin and Markus Raschke}, title = {Plasmonic nanofocused four-wave mixing for femtosecond near-field imaging}, year = {2016}, journal = {Nature Nanotechnology}, pages = {1\textendash6}, month = {2016-02}, issn = {1748-3387}, url = {http://www.nature.com/doifinder/10.1038/nnano.2015.336}, doi = {10.1038/nnano.2015.336}, }