Cryogenics

Step 1 of research is ignore wikipedia.
Step 2 of research is try to ignore encarta (it is far better than wikipedia but I still do not like it).

Cryogenics can refer to many things, in popular culture human cryogenics (freezing of people or parts thereof) is what it will tend to mean while cryogenics in science/engineering tends to refer to things done at low temperatures.

For science/engineering you could do a lot worse than:
http://www.slac.stanford.edu/econf/C0605091/present/CERN.PDF
Human cryogenics is much harder to find something sensible on (a great chunk of it is taken over by various psuedoscience types peddling nonsense). Your best bet here is ignore the long term stuff and look at localised and or/emergency medicine as this is where most of the good science is focused these days (although there is some stuff for long term space exploration happening).

In short search for whatever you like but make sure your source is a decent scientifically led institute (universities are a good bet and many with have a somewhat unique TLD so you can add stuff like site:ac.uk OR site:.edu to the search to narrow it down)

assuming you mean Cryonics, which is cryogenic medicine.

http://en.wikipedia.org/wiki/Cryonics

the best way to research using wikipedia is to look at the sources they use. that is where I get most of my source articles from when writing things for University. unfortunately the article on general cryogenics is lacking sources, so useless.