@article{Run88,
 author = {R\"{u}nger, G.},
 title = {{Variational Methods and Scalar Nonlinearities}},
 journal = {Applicable Analysis},
 volume = {28},
 number = {2},
 pages = {115--119},
 year = {1988},
 issn = {0003-6811},
 publisher = {Gordon and Breach},
 doi = {10.1080/00036818808839453},
}