Coronae of Dwarf Stars
Highly mathematical explanation of how to calculate the coronae of dwarf stars.
http://astro.uchicago.edu/rranch/vkashyap/Mcorona/

Chandra X-Ray Observatory: Brown Dwarf Stars
Introduction and data on brown dwarf stars.
http://chandra.harvard.edu/xray_sources/browndwarf_fg.html

Cosmic census finds universe full of brown dwarfs
Details the surprising amount of brown dwarf stars in the universe. CNN article
http://www.cnn.com/2000/TECH/space/08/23/hubble.brown.dwarves/index.html

White Dwarfs Lecture
The origin and general characteristics of white dwarfs. High School level.
http://www-astronomy.mps.ohio-state.edu/%7Eryden/ast162_5/notes19.html

Astronomy 162: White Dwarfs and Novae
Short on text, but contains excellent images, diagrams and a table of the brightest white dwarfs
http://csep10.phys.utk.edu/astr162/lect/novae/novae.html

Royal Observatory Greenwich: White Dwarfs
Explains stellar stability and evolution, electron degeneracy, the observation and evolution of white dwarfs, and the white dwarf Sirius B.
http://www.rog.nmm.ac.uk/leaflets/white/white.html

NASA: White Dwarfs Introduction
Easy to understand and includes images
http://imagine.gsfc.nasa.gov/docs/science/know_l1/dwarfs.html

Accreting White Dwarfs
Deep research from the TeSRE Institute - an Italian body who analyze observations in the IR, optical, X-ray and gamma ray energy bands.
http://www.tesre.bo.cnr.it/Research/SAX/core_program/node27.html

Echelle Spectra for White Dwarfs
Contains final processed IUE SWP echelle spectra for all 55 hot white dwarfs
http://vega.lpl.arizona.edu/newsips/

A Brown Dwarf Solar flare
Article on the surprise solar flare of a brown dwarf star detected by NASA's Chandra X-ray Observatory.
http://www.msfc.nasa.gov/NEWSROOM/news/releases/2000/00-206.html

The Discovery of Brown Dwarfs
Less massive than stars but more massive than planets, brown dwarfs were long assumed to be rare. New sky surveys, however, show that the objects may be as common as stars. Article from Scientific American
http://www.sciam.com/article.cfm?articleID=000276D4-33FB-1C75-9B81809EC588EF21

Research Plus: Brown Dwarf
Online encyclopedia article.
http://encarta.msn.com/encnet/refpages/RefArticle.aspx?refid=761565309