@techreport{kam1006,
 author = {D. Kr\'al', L. Mach, and J-S Sereni},
 title = {A new lower bound based on Gromov's method of selecting heavily covered points},
 institution = {KAM-DIMATIA Series},
 year = {2011},
 number = {1006},
 type = {prepublication}
}