Herbrand's theorem and non-Euclidean geometry. Beeson, M., Boutry, P., & Narboux, J. Bulletin of Symbolic Logic, 21(1):111-122, June, 2015.  
Pdf  bibtex   @article{beeson2015c-narboux-boutry,
	author = {Michael Beeson and Pierre Boutry and Julien Narboux},
	date-added = {2014-11-15 01:23:10 +0000},
	date-modified = {2015-06-25 19:08:05 +0000},
	journal = {Bulletin of Symbolic Logic},
	keywords = {Logic, Geometry},
	month = {June},
	number = {1},
	pages = {111-122},
	title = {{H}erbrand's theorem and non-{E}uclidean geometry},
	url_pdf = {HerbrandEuclid.pdf},
	volume = {21},
	year = {2015}} 
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