Maps of Iran:

<http://www.lib.utexas.edu/maps/middle_east_and_asia/iran_pol01.jpg

and <http://healthmap.org/promed/en?v=32.7,57.2,5

Witches' broom affected lime tree:

<http://www.forestryimages.org/images/768x512/0746027.jpg and

<http://www.forestryimages.org/images/768x512/0746054.jpg

Witches' broom, close up:

<http://www.forestryimages.org/images/768x512/0746031.jpg,

<http://flickr.com/photos/horticulture/2326582306/, and

<http://www.forestryimages.org/images/768x512/0746032.jpg

Information on lime witches' broom:

<http://edis.ifas.ufl.edu/PP150, and

<http://www.iisc.ernet.in/currsci/jul10/articles27.htm

Information on lime witches' broom phytoplasma:

<http://www.ivia.es/iocv/archivos/proceedingsX/10th307_309.pdf and

<http://cat.inist.fr/?aModele=afficheN&cpsidt=3597606

_Ca._ Phytoplasma aurantifolia taxonomy:

<http://www.uniprot.org/taxonomy/180978

_Ca._ Phytoplasma taxonomy and species groups:

<http://www.uniprot.org/taxonomy/33926

Phytoplasma taxonomy:

<http://ijsb.sgmjournals.org/cgi/content/abstract/57/8/1855

Phytoplasma information and resource centre:

<http://plantpathology.ba.ars.usda.gov/phytoplasma.html

Iranian Witches' Broom Disease of Lime Network:

<http://www.iwbdln.ir/english%20webpage/Index_EN.htm

Agricultural Biotechnology Research Institute of Iran:

<http://www.abrii.ac.ir/en/.