Please find the attached articles on this subject:
Information on the Fatah in Lebanon

Sahliyeh, Emile. 1986. The PLO After the Lebanon War. London: Westview Press. pp. 139-175.
General Information on the Palestinian in Lebanon

Arab Studies Quarterly. Fall 1981. Vol. 3, No. 4. Faris, Hani. "Lebanon and the Palestinians: Brotherhood or Fratricide?". pp. 352-370.

. Summer 1983. Vol. 5, No. 3. Moughrabi, Fouad. "The Palestinians After Lebanon". pp. 211-219.

Khalidi, Rashid. "The Palestinians and Lebanon". in Toward A Viable Lebanon. 1988. Edited by Halim Barakat. Center for Contemporary Arab Studies, Georgetown University. Croom Helm. pp. 133-166.
General Information on the PLO

Mussalam, Sami. 1988. The PLO. Amana Books. pp. 11-21, 69.

Gresh, Alain. 1983. The PLO: Towards an Independent Palestinian State. Third World Books.