@article{article, title  = {{Effect of polariton-polariton interactions on the excitation spectrum of a nonequilibrium condensate in a periodic potential}},

 publisher = {{American Physical Society (APS)}},

 url = {{http://eprints.whiterose.ac.uk/81250/ }},

 year = {{2012}},

 month = {{12}},

 author = {{Krizhanovskii DN and Cerda-Méndez EA and Gavrilov S and Sarkar D and Guda K and Bradley R and Santos PV and Hey R and Biermann K and Sich M and Fras F et al}},

 doi = {{10.1103/physrevb.87.155423}},

 volume = {{87}},

 journal = {{Physical Review B}},

 issue = {{15}},

 note = {{Accessed on 2024/12/22}}}