. (2016). Validity analysis of take or pay condition in international gas sale agreements: legal and economical perspectives. Legal Research Quarterly, 19(74), 117–142.

. "Validity analysis of take or pay condition in international gas sale agreements: legal and economical perspectives", Legal Research Quarterly, 19, 74, 2016, 117–142.

. (2016). 'Validity analysis of take or pay condition in international gas sale agreements: legal and economical perspectives', Legal Research Quarterly, 19(74), pp. 117–142.

, "Validity analysis of take or pay condition in international gas sale agreements: legal and economical perspectives." Legal Research Quarterly, 19 74 (2016): 117–142,

. Validity analysis of take or pay condition in international gas sale agreements: legal and economical perspectives. Leg Res Q. 2016;19(74):117–142 (In Persian).