Stop the war!
Остановите войну!
for scientists:
default search action
"Forbidden configurations in intersection graphs of r-graphs."
M. L. Gardner (1980)
- M. L. Gardner:
Forbidden configurations in intersection graphs of r-graphs. Discret. Math. 31(1): 85-88 (1980)
manage site settings
To protect your privacy, all features that rely on external API calls from your browser are turned off by default. You need to opt-in for them to become active. All settings here will be stored as cookies with your web browser. For more information see our F.A.Q.