Nodes can use other techniques to further filter messages. For instance, we can assign a particular IP multicast group
address to a physical area, and consumers can subscribe to multicast groups according to their current route. These
consumers will only receive messages about those areas in which they are interested. Give all authors' names; use "et al."
if there are six authors or more. Papers that have not been published, even if they have been submitted for publication,
should be cited as "unpublished" [4]. Papers that have been accepted for publication should be cited as "in press" [5]. In a
paper title, capitalize the first word and all other words except for conjunctions, prepositions less than seven letters, and
prepositional phrases.