Nonextendibility of D(-1)-triples of the form {1, 10, c}. - Alan Filipin (Int. J. Math. Math. Sci., 2005)

Extensions of Some Parametric Families of D(16)-Triples. - Alan Filipin (Int. J. Math. Math. Sci., 2007)

D(4)-pair {k-2, k+2} and its extension. - Alan Filipin; Ljubica Bacic (Electron. Notes Discret. Math., 2013)

Diophantine quadruples in $ mathbb {Z}[i][X]$. - Alan Filipin; Ana Jurasic (Period. Math. Hung., 2021)

The extension of the D(-k)-pair k, k+1 to a quadruple. - Nikola Adzaga; Alan Filipin; Yasutsugu Fujita (Period. Math. Hung., 2022)

On D(-1)-triples 1, 4p2+1, 1-p in the ring ${{ mathbb {Z}}}[ sqrt{-p}]$ with a prime p. - Alan Filipin; Mirela Jukic Bokun; Ivan Soldo (Period. Math. Hung., 2022)