Bill_Bauer2 says,

I had a chance to work with this contractor twice. Both times I had a very positive experience. After helping with my current project, this contractor has patiently answered all of my follow-up questions. He was able to solve a problem that I thought could not be solved. In my experience, he does everything in a timely manner. Needless to say, I was very impressed by his analytical abilities and by his professionalism. I am looking forward to working with this contractor in the future.

for Incomplete Gamma&non-homogeneous Poisson on Aug 22, 2012

Ultraviolet Pure says,

Timely, communicative and very cooperative. Will definitely look at using him again as needs come up.

for Math / physics person needed on Feb 11, 2012