1. Adam KM (2015) A study of Pittsburgh, Pennsylvania cemeteries and grave-marker design. Master’s thesis, Indiana University of Pennsylvania, Philadelphia, PA
2. Alemayehua Z (2014) Recreational ecosystem service of cemeteries in Addis Ababa under different management. Master’s thesis, Addis Ababa University, p 85
3. André MF, Phalip B (2010) Rates of stone recession on Mediaeval monuments: some thoughts and methodological perspectives. Coruña 35:13–40
4. Augeyre M (2008) La dégradation du patrimoine funéraire calcaire sur le littoral Atlantique français: l’exemple de l’île de Ré/ Weathering of limestone tombstones on the French Atlantic coast: the example of lsle of Rhé. Bulletin de l’Association de géographes français 85:63–70.
https://doi.org/10.3406/bagf.2008.2599
5. Barnett AJ (2013) “We shall meet beyond the river”: an analysis of the deathscape of Brownville, Nebraska. Doctoral thesis, University of Nebraska, p 280.
http://digitalcommons.unl.edu/geographythesis/17