ⴱⵉⵏⵢⵍ, ⵋ. ⴱⵙⵉⵛⵂⵓⴱⵉⵓⵍⵓⴶⵉ (1990) ⴱⵔⵢⵏⵜⵉⵛⵢ ⵂⴰⵍⵍ,ⵉⵏⵛ. ⵍⵢⵢⵓⵓⵆ, ⵋ. (2002), ⵙⵉⵏⴰⴱⵜⵉⵛ ⵙⵢⵍⴼ: ⵉⵏⴷⵢⴾ ⵉⵎⵎⵉⴾ ⵓⴰ ⵙ ⴻⵈⵈⴰⵍ ⴰⴾⵉⵍⴾⵉⵍ ⵏⴰⵏⴰⴶⵂ ⴰⵓⴰ ⵏ ⴰⵎⵓⵙ,ⵏⵢⵓ ⵗⵓⵔⴾ: ⴱⵉⴾⵉⵏⴶ ⴱⵢⵏⴶⵓⵉⵏ.