@article{5377, author = {A. Brandenburg and Ellen Zweibel}, title = {The formation of sharp structures by ambipolar diffusion}, year = {1994}, journal = {The Astrophysical Journal}, volume = {427}, pages = {L91}, month = {Jan-06-1994}, issn = {0004-637X}, url = {http://www.nordita.org/~brandenb/Own_Papers/1994/Bran+Zwei94_col.pdf}, doi = {10.1086/187372}, }