Separability of diagonal symmetric states: a quadratic conic optimization problem. - Jordi Tura; Albert Aloy; Ruben Quesada; Maciej Lewenstein; Anna Sanpera (Quantum, 2018)

Entangled symmetric states and copositive matrices. - Carlo Marconi; Albert Aloy; Jordi Tura; Anna Sanpera (Quantum, 2021)