(Note that typing texdoc packagename on a Mac or Linux command prompt will give you futher documentation on these
The eagle-eyed will notice that space between words is a different length to that between sentences. LaTeX distinguishes-interword space from inter-sentence space by observing the full stop characters. So an inter-sentence space is placed after every full stop. However, there are exceptions and places where this is wrong.
\@.instend of a simple
I. W. Phillips. Here put a \ between the . and the following space. This indicates that this should be an interword space. You can also use a
~(tilde) character which makes the space the same size, but prevents a line break occurring at that point, which is often useful.