On the sum of two integral squares in quadratic fields ℚ(√±p)
Pairs of Pell equations having at most one common solution in positive integers.
Parametrizing SL₂(ℤ) and a question of Skolem
Partitions and indefinite quadratic forms.
Perfect squares in the sequence .
Polynomial parametrizations of length 4 Büchi sequences
Prime Pythagorean triangles.
Products of consecutive integers and the Markoff equation.
Propositions relatives à la théorie des nombres
Pythagoräische Tripel: Gleichverteilung und geometrische Anwendungen
Quadratic Diophantine equation .
Quadratic diophantine equations with parameters
Quadratic integral solutions to double Pell equations
Rational triangles with equal area.
Rationale Tetraeder.
Remarks on a question of Skolem about the integer solutions of x₁x₂ - x₃x₄ = 1
Remarks on the number of non-zero coefficients of polynomials.
Representations of discriminantal divisors by binary quadratic forms.
Résidus de puissances
Résolution de l’équation indéterminée en nombres entiers.