Etudes ball ligthning

http://www.scientificexploration.org/journal/jse_20_2_coleman.pdf

http://www.eso.org/public/archives/newsletters/pdf/sis_12.pdf

Des physiciens créent une boule de plasma 

http://www.newscientist.com/article/dn9293-physicists-create-great-balls-of-fire.html#.Uu5oxY3_GaU

http://www.newscientist.com/article/dn9293-physicists-create-great-balls-of-fire.html

http://www.universalis.fr/encyclopedie/matiere-physique-plasmas/

http://www.ldi5.com/ovni/natconf.php

Eath lightning plasma

https://www.google.fr/search?source=ig&rlz=1G1SVED_FRFR513&q=Earthligts&oq=&gs_l=#hl=fr&tbo=d&rlz=1G1SVED_FRFR513&spell=1&q=Earthlights+plasma&sa=X&ei=S3chUa3pAc3Lsga4_YCwAg&sqi=2&ved=0CC4QvwUoAA&bav=on.2,or.r_gc.r_pw.r_qf.&bvm=bv.42553238,d.Yms&fp=6024f8003215b098&biw=1280&bih=624

La foudre en boule en haute athmosphère

http://ufologie.patrickgross.org/htm/balllightning01f.htm

https://sites.google.com/site/amundsenastronomie/dossier-meteorites/recherche/geipan/3822