On the stability of the linear differential equation of higher order with constant coefficients. - Dalia Sabina Cîmpean; Dorian Popa (Appl. Math. Comput., 2010)

Remarks on stability of linear recurrence of higher order. - Janusz Brzdek; Dorian Popa; Bing Xu (Appl. Math. Lett., 2010)

Hyers-Ulam stability of Euler's equation. - Dalia Sabina Cîmpean; Dorian Popa (Appl. Math. Lett., 2011)

Note on nonstability of the linear functional equation of higher order. - Janusz Brzdek; Dorian Popa; Bing Xu (Comput. Math. Appl., 2011)

Hyers-Ulam stability of the linear differential operator with nonconstant coefficients. - Dorian Popa; Ioan Rasa (Appl. Math. Comput., 2012)

The Fréchet functional equation with application to the stability of certain operators. - Dorian Popa; Ioan Rasa (J. Approx. Theory, 2012)

Remarks on stability and non-stability of the linear functional equation of the first order. - Janusz Brzdek; Dorian Popa; Bing Xu (Appl. Math. Comput., 2014)

On the stability of the linear functional equation in a single variable on complete metric groups. - Soon-Mo Jung; Dorian Popa; Michael Th. Rassias (J. Glob. Optim., 2014)

Generalized Golden Ratios defined by means. - Ioana Craciun; Daniela Inoan; Dorian Popa; Lucian Tudose (Appl. Math. Comput., 2015)

Approximate solutions of the logistic equation and Ulam stability. - Dorian Popa; Ioan Rasa; Adrian Viorel (Appl. Math. Lett., 2018)

Ulam Stability of a Second Linear Differential Operator with Nonconstant Coefficients. - Liviu Cadariu; Dorian Popa; Ioan Rasa (Symmetry, 2020)

On Approximate Aesthetic Curves. - Ioana Craciun; Dorian Popa; Florina Serdean; Lucian Tudose (Symmetry, 2020)

Best Constant in Ulam Stability for the Third Order Linear Differential Operator with Constant Coefficients. - Alina Ramona Baias; Dorian Popa (Axioms, 2023)