Taagepera، Rein (1979)۔ "Size and Duration of Empires: Growth-Decline Curves, 600 B.C. to 600 A.D."۔ Social Science History۔ ج 3 ش 3/4: 121۔ DOI:10.2307/1170959۔ ISSN:0145-5532۔ JSTOR:1170959
jstor.org
Taagepera، Rein (1979)۔ "Size and Duration of Empires: Growth-Decline Curves, 600 B.C. to 600 A.D."۔ Social Science History۔ ج 3 ش 3/4: 121۔ DOI:10.2307/1170959۔ ISSN:0145-5532۔ JSTOR:1170959
worldcat.org
Taagepera، Rein (1979)۔ "Size and Duration of Empires: Growth-Decline Curves, 600 B.C. to 600 A.D."۔ Social Science History۔ ج 3 ش 3/4: 121۔ DOI:10.2307/1170959۔ ISSN:0145-5532۔ JSTOR:1170959