[1] Tadesse W, Desalegn G, Ali R. Natural gum and resin bearing species of Ethiopia and their potential applications. Forest Syst. 2007; 16(3): 211-221.
[2] Evans WC. Trease and Evans' pharmacognogy. 13th ed. London: Bailliere Tindall, 1989.
[3] Wichtl M. Teedrogen und phytopharmaka. 5th ed. Stuttgart: Wissenschaftliche Verlagsgesellschaft, 2009.
[4] Moussaieff A, Mechoulam R. Boswellia resin: from religious ceremonies to medical uses; a review of in vitro, in vivo and clinical trials. J Pharm Pharmacol. 2009; 61(10): 1281-1293.
[5] Ernst E. Frankincense: systematic review. Brit Med J. 2008; Article ID a2813.
[6] Mothana RAA, Hasson SS, Schultze W, Mowitz A, Lindequist U. Phytochemical composition and in vitro antimicrobial and antioxidant activities of essential oils of three endemic Soqotraen Boswellia species. Food Chem. 2011; 126(3): 1149-1154.
[7] Posadzki P, Watson L, Ernst E. Contamination and adulteration of herbal medicinal products (HMPs): an overview of systematic reviews. Eur J Clin Pharmacol. 2013; 69(3), 295-307.
[8] Kosalec I, Cvek J, Tomić S. Contaminants of medicinal herbs and herbal products. Arch Ind Hyg Toxicol. 2009; 60(4), 485-501.
[9] Yordanov ND, Lagunov O, Dimov K. EPR spectra induced by gamma-irradiation of some dry medical herbs. Radiat Phys Chem. 2009; 78(4): 277-280.
[10] Kim MJ, Ki HA, Kim WY, Pal S, Kim BK, Kang WS, Song JM. Development of radiation indicators to distinguish between irradiated and non-irradiated herbal medicines using HPLC and GC-MS. Anal Bioanal Chem. 2010; 398(2), 943-953.
[11] Microbial tests: sterility. In: United States pharmacopeia 31, National formulary 26. Washington DC: United States Pharmacopeial Convention Incorporated, 2007.
[12] Adams RP. Identification of essential oil components by gas chromatography/mass spectrometery. 4th ed. Illinois: Allured Publishing Corporation, 2007.
[13] Mikhaeil BR, Maatooq GT, Badria FA, Amer MMA. Chemistry and immunomodulatory activity of frankincense oil. Z Naturforsch. 2003; 58(3-4): 230-238.
[14] Basar S, Koch A, König WA. A verticillane-type diterpene from Boswellia carterii essential oil. Flavour Frag J. 2001; 16(5):315-318.
[15] Chatterjee S, Variyar PS, Gholap AS, Padwal-Desai SR, Bongirwar DR. Effect of γ-irradiation on the volatile oil constituents of turmeric (Curcuma longa). Food Res Int. 2000; 33(2): 103-106.
[16] Seo HY, Kim JH, Song HP, Kim DH, Byun MW, Kwon JH, Kim KS. Effects of gamma irradiation on the yields of volatile extracts of Angelica gigas Nakai. Radiat Phys Chem. 2007; 76 (11-12): 1869-1874.
[17] Razavi SM, Nejad-Ebrahimi S.Chemical composition, allelopatic and antimicrobial potentials of the essential oil of Zosima absinthifolia (Vent.) Link fruits from Iran. Nat Prod Res. 2010; 24(12): 1125-1130.
[18] Siddiqui MZ. Boswellia serrata, a potential anti-inflammatory agent: an overview. Indian J Pharm Sci. 2011; 73(3): 255-261.
[19] Taleb AM. Olibanum. In: Iranian herbal pharmacopoeia. Tehran: Ministry of Health and Medical Education Publication, 2002.
[20] Chevrier MR, Ryan AE, Lee DY, Zhongze M, Wu-Yan Z, Via CS. Boswellia carterii extract inhibits TH1 cytokines and promotes TH2 cytokines in vitro. Clin Diagn Lab Immunol. 2005; 12(5): 575-580.
[21] Afsharypuor S, Rahmany M. Essential oil constituents of two African olibanum available in Isfahan commercial market. Iran J Pharm Sci. 2005; 1(3): 167-170.
[22] Ni X, Suhail MM, Yang Q, Cao A, Fung KM, Postier RG, Woolley C, Young G, Zhang J, Lin HK. Frankincense essential oil prepared from hydrodistillation of Boswellia sacra gum resins induces human pancreatic cancer cell death in cultures and in a xenograft murine model. BMC Complent Altern Med. 2012; 12(253): 1-14.
[23] Basar S. Phytochemical investigations on Boswellia species. Comparative studies on the essential oils, pyrolysates and boswellic acids of Boswellia carterii Birdw., Boswellia serrata Roxb., Boswellia frereana Birdw., Boswellia neglecta S. Moore and Boswellia rivae Engl. Ph.D. thesis. Institute of Organic Chemistry, University of Hamburg, Germany, 2005.
[24] Marongiu B, Piras A, Porcedda S, Tuveri E. Extraction of Santalum album and Boswellia carterii Birdw. volatile oil by supercritical carbon dioxide: influence of some process parameters. Flavour Frar J. 2006; 21(4): 718-724.