References

Electronic reference

Aleksandra Surmak, « Study of discoloured iron-gall ink inscriptions – case of the Gradual of Lviv Benedictines from Krzeszow », CeROArt [Online], EGG 5 | 2016, Online since 25 February 2016, connection on 18 October 2017. URL : http://ceroart.revues.org/4909