The role of lime mortar in the 21st century: an academic paper written by Lauren B. Sickels-Taves, Ph.D and Philip D. Allsopp, D.Arch, RIBA for the International Building Lime Symposium (2005) Orlando, Florida, March 9 -11, 2005

An architect's perspective on repointing by Sean Johnson
B.A. Dip. Arch. Oxford, MSc (Arch)(Cons) (2000)

An academic paper on how to extend the life of masonry through choice of mortar and aggregate type:

RICS forum comments:

Mortar mechanics by a senior building consultant (2007):

Society for the Protection of Ancient Buildings on masonry bees:

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