Greetings and welcome to ATS jcspock.
Here's what I have found:
A 2002 article mentioning both:
Article mentioning that NASA is working with theorist Ning Li. 2002
"Anti-Gravity Engines and Laser Weaponry"
This site may be of some significance to you. It claims to host a load of documents from both Ning Li and Podkletnov:
A 2002 article mentioning Podkletnov:
"Anti-gravity research on the rise"
Google on Eugene Podkletnov:
Nothing mentioned on the current status of Podkletnov, that I can quickly find.
[Edited on 7-2-2004 by Seekerof]