While this study is certainly helpful in determining when a particular event occurred, it is not useful in determining what the event was.  Subdural hemorrhaging is known to occur from a multitude of causes, and among them, shaking may be the least likely cause.

I'm very concerned that this information could be misused by medical professionals and the courts to convict an innocent person of harming, or murdering their own child, when natural processes were at work.  Indeed, this is already what is happening in the so called "shaken baby" cases.  

I would hope that the authors suggest a great deal of circumspection in these cases before accusing someone of murder.  Ruling out other possibilities does not justify a diagnosis of murder.  If it did, we would be imprisoning parents in cases of SIDS as well.