by Zrinka Franušić and Dijana Kreso
Reference:
Zrinka Franušić and Dijana Kreso, Nonextensibility of the pair $\lbrace 1, 3\rbrace$ to a Diophantine quintuple in ${\mathbb Z}[\sqrt{2}]$, Journal of Combinatorics and Number Theory, 3(3), 151-165, (2011).
Bibtex Entry:
@Article{FranusicKreso2011,
arxiv = {1312.5241},
author = {Zrinka Franu{\v s}i{\'c} and Dijana Kreso},
journal = {Journal of Combinatorics and Number Theory},
title = {Nonextensibility of the pair $\lbrace 1, 3\rbrace$ to a {D}iophantine quintuple in {${\mathbb Z}[\sqrt{2}]$}},
year = {2011},
number = {3},
pages = {151-165},
volume = {3},
groups = {Project09 (Tichy), Student, External},
xxmrnumber = {2986557},
}