latex 插入url引用
在bib文件里按如下格式编辑url引用：
@misc{bworld, author = {Ingo Lütkebohle}, title = {{BWorld Robot Control Software}}, howpublished = "\url{http://aiweb.techfak.uni-bielefeld.de/content/bworld-robot-control-software/}", year = {2008}, note = "[Online; accessed 19-July-2008]"}