References

http://www.cnyhealingarts.com/2011/07/21/the-health-benefits-of-vasisthasana-side-plank-pose/
The Health Benefits of Vasisthasana (Side Plank Pose)
I learned physical benefits and how actions of muscles involved here.

http://health.indianetzone.com/yoga/hathyoga/1/vasisthasana.htm
Vasisthasana

I learned therapeutic benefits here.

http://www.yogajournal.com/practice/2581
Let It Shine
I learned physical benefits here.

http://www.yogajournal.com/poses/783
Side Plank Pose
I learned how to get in and out of Vasisthasana, the Sanskrit name and meaning, and the English name.

http://faern-in-the-works.com/2010/04/01/pose-of-the-month-vasisthasana-pose-dedicated-to-the-sage-vasistha/
Pose of the month: Vasisthasana
I learned how to get into and out of the pose.