[PRL] LNCS latex style

[Dave Herman]

In the LNCS latex style, the lemma/theorem/etc environment starts the 
text on the same line as the heading, but this looks bad for theorems 
with multiple propositions, e.g.

     Lemma 7.
       (i) Ice cream is tasty.
       (ii) Frozen yogurt, not so much.
       (iii) Ice cream > frozen yogurt.

Unfortunately, if I just insert a \newline (preceded by a "\ " to 
prevent LaTeX from barfing), it ends up with far too large of a break 
between the heading and the statement.

Is there a better way to do this?

Thanks,
Dave