▁Population ▁G row th ▁and ▁Soci opol it ical ▁Inst ability ▁in ▁Agr arian ▁States . ▁ ▁T urch in , ▁P ., ▁et ▁al ., ▁ed s . ▁( 2 0 0 7 ) ▁History ▁& ▁Mathemat ics : ▁Historical ▁Dynam ics ▁and ▁Development ▁of ▁Complex ▁Soci eties . ▁Moscow : ▁Kom K n iga . ▁ ▁Tr ends ▁and ▁Cy cles , ▁K eld y sh ▁Institute ▁of ▁App lied ▁Mathemat ics , ▁ 2 0 1 4 . ▁ ▁U sh er , ▁D . ▁( 1 9 8 9 ) ▁The ▁D yn astic ▁Cy cle ▁and ▁the ▁Station ary ▁State . ▁The ▁American ▁Econom ic ▁Review ▁ 7 9 : ▁ 1 0 3 1 – 4 4 . ▁ ▁We iss , ▁Volk mar ▁( 2 0 2 0 ). ▁I Q ▁Me ans ▁I ne quality : ▁The ▁Population ▁Cy cle ▁that ▁D riv es ▁Human ▁History . ▁K DP . ▁. ▁ ▁External ▁links ▁ ▁Ar ise ▁C li od ynam ics ▁by ▁Peter ▁T urch in ▁ ▁Sec ular ▁Cy cles ▁and ▁Mill enn ial ▁Tr ends ▁ ▁Complex ▁historical ▁dynamics ▁of ▁crisis : ▁the ▁case ▁of ▁By z ant ium ▁( with ▁an ▁extensive ▁discussion ▁of ▁the ▁concept ▁of ▁sec ular ▁cycles ▁from ▁the ▁point ▁of ▁view ▁of ▁medieval ▁studies ) ▁ ▁Category : So ci ological ▁theories ▁Category : The ories ▁of ▁history <0x0A> </s> ▁Brad ley ▁King ▁was ▁a ▁screen writer . ▁ ▁Brad ley ▁King ▁may ▁also ▁refer ▁to :