per ron , ▁a ▁secret ▁and ▁very ▁dis cre et ▁woman , ▁are ▁without ▁foundation . ▁Furthermore , ▁Bel per ron ' s ▁arch ives ▁confirm ▁that ▁there ▁was ▁a ▁plan ▁for ▁an ▁art ▁book ▁devoted ▁to ▁her ▁work . ▁Hans ▁N adel hof fer ▁( 1 9 4 0 – 1 9 8 8 ), ▁an ▁expert ▁from ▁Christ ie ' s ▁j ew ell ery ▁department ▁in ▁Gene va , ▁known ▁for ▁its ▁reference ▁mon ograph ▁devoted ▁to ▁Cart ier , ▁planned , ▁in ▁ 1 9 8 1 , ▁writing ▁a ▁book ▁about ▁Bel per ron ' s ▁work . ▁S edu ced ▁by ▁this ▁project , ▁she ▁began ▁to ▁gather ▁all ▁its ▁arch ives ▁before ▁she ▁died . ▁ ▁In ▁ 2 0 0 8 , ▁fasc in ated ▁by ▁art , ▁the ▁new ▁he ir ▁asked ▁a ▁writer ▁special ising ▁in ▁ant ique ▁j ew ell ery , ▁Syl vie ▁R au let , ▁and ▁a ▁French ▁expert ▁in ▁j ew ell ery , ▁Oliv ier ▁Bar oin , ▁to ▁continue ▁the ▁draft ▁mon ograph ▁reference ▁project ▁started ▁by ▁Hans ▁N adel hof fer . ▁The ▁French ▁expert ▁has ▁acquired ▁ 1 ▁October ▁ 2 0 0 8 ▁with ▁a ▁registr ered ▁contract ▁at ▁Vers a illes , ▁Bel per ron ' s ▁complete ▁arch ives ▁and ▁was ▁mand ated ▁by ▁the ▁last ▁resid ual ▁leg ate e ▁to ▁ensure ▁in ▁perpet u ity ▁" the ▁future ▁of ▁the ▁expert ise ▁of ▁the ▁complete ▁work ▁created ▁by ▁Su