@article{10_37236_1988,
     author = {B\'ela Bollob\'as and Vladimir Nikiforov},
     title = {The sum of degrees in cliques},
     journal = {The electronic journal of combinatorics},
     year = {2005},
     volume = {12},
     doi = {10.37236/1988},
     zbl = {1097.05022},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1988/}
}