▁articles ▁with ▁two ▁repub lished ▁in ▁Ann als ▁of ▁Physics ▁and ▁Class ical ▁and ▁Quant um ▁Gra vity . ▁Gr ich ka ▁Bog d ano ff ' s ▁th esis ▁was ▁" Fl uct u ations ▁qu anti ques ▁de ▁la ▁signature ▁de ▁la ▁mét rique ▁à ▁l ' éch elle ▁de ▁Plan ck " ▁( 1 9 9 9 ) ▁and ▁Ig or ▁Bog d ano ff ' s ▁" État ▁top ologique ▁de ▁l ' es pace - temps ▁à ▁l ' éch elle ▁z éro " ▁( 2 0 0 2 ). ▁ ▁In ▁ 2 0 0 2 , ▁a ▁bigger ▁controvers y ▁arose ▁around ▁the ▁Bog d ano ff ▁brothers ' ▁work . ▁It ▁came ▁to ▁be ▁known ▁as ▁the ▁ ▁Bog dan ov ▁affair , ▁ar ising ▁from ▁an ▁academic ▁dispute ▁regarding ▁the ▁legit im acy ▁of ▁a ▁series ▁of ▁theoretical ▁physics ▁papers ▁written ▁by ▁the ▁brothers . ▁Deb ate ▁er upt ed ▁over ▁the ▁degree ▁to ▁which ▁the ▁work ▁constit uted ▁a ▁contribution ▁to ▁physics ▁or ▁was , ▁instead , ▁meaning less . ▁The ▁en su ing ▁dispute ▁drew ▁considerable ▁coverage ▁in ▁the ▁main stream ▁media . ▁ ▁Personal ▁lives ▁▁ ▁Ig or ▁Bog d ano ff ▁has ▁had ▁six ▁children . ▁Dim it ri , ▁the ▁oldest , ▁was ▁born ▁in ▁ 1 9 7 6 ▁of ▁a ▁relationship ▁with ▁com ed ian ▁Gene vi ève ▁Grad . ▁After ▁marry ing ▁Count ess ▁Lud m illa ▁d ' O ult rem ont , ▁he ▁had