An Authentic Key Agreement Protocol based on the Weil Pairing. - Constantin Popescu; Ioan Mang (Applied Informatics, 2003)

An Improvement of the Ateniese's Verifiable Encryption Protocol. - Constantin Popescu (Informatica, 2005)

An Electronic Cash System Based on Group Blind Signatures. - Constantin Popescu (Informatica, 2006)

An Anonymous Mobile Payment System Based on Bilinear Pairings. - Constantin Popescu (Informatica, 2009)

A Secure and Efficient Off-line Electronic Payment System forWireless Networks. - Horea Oros; Constantin Popescu (Int. J. Comput. Commun. Control, 2010)

A Secure E-Cash Transfer System Based on the Elliptic Curve Discrete Logarithm Problem. - Constantin Popescu (Informatica, 2011)

Numerical solutions of the nonlinear fuzzy Hammerstein-Volterra delay integral equations. - Alexandru Mihai Bica; Constantin Popescu (Inf. Sci., 2013)

Fuzzy spline interpolation with optimal property in parametric form. - Alexandru Mihai Bica; Constantin Popescu (Inf. Sci., 2013)

Approximating the solution of nonlinear Hammerstein fuzzy integral equations. - Alexandru Mihai Bica; Constantin Popescu (Fuzzy Sets Syst., 2014)

Note on fuzzy monotonic interpolating splines of odd degree. - Alexandru Mihai Bica; Constantin Popescu (Fuzzy Sets Syst., 2017)

Iterative numerical method for nonlinear fuzzy Volterra integral equations. - Alexandru Mihai Bica; Constantin Popescu (J. Intell. Fuzzy Syst., 2017)

Fuzzy trapezoidal cubature rule and application to two-dimensional fuzzy Fredholm integral equations. - Alexandru Mihai Bica; Constantin Popescu (Soft Comput., 2017)

A secure and efficient payment protocol based on ElGamal cryptographic algorithms. - Constantin Popescu (Electron. Commer. Res., 2018)

Fuzzy Bezier splines with application to fuzzy functional integral equations. - Alexandru Mihai Bica; Constantin Popescu (Soft Comput., 2020)