Bibtex errors and warnings

invalid token near line 115 (text was ''')
/tmp/yossiv.bib, line 119, warning: 55 characters of junk seen at toplevel
/tmp/yossiv.bib, line 115, warning: undefined macro "``arXiv:1411.4641"
/tmp/yossiv.bib, line 140, warning: possible runaway string started at line 139