At that time it had an impact factor of 1.162.

The journal received its first impact factor for 2011 of 3.902.

From 1996 to 2004, its impact factor remained close to 10.

The impact factor for the Journal over the five years between 2004 and 2008 was 2.807.

No details for its impact factors are available to date.

The impact factor of this journal was 0.495 in 2006.

In 2011, the journal had an impact factor of 5.355.

This journal started in 2002 and has an impact factor of 4.061.

It was established in 1978 and has a 2010 impact factor of 1.489.

Since the journal was first established in 2011 no impact factor is available.