title: Lie superalgebras graded by Pn and Qn.
abstract: In this article we study Lie superalgebras graded by the root systems P (n) and Q(n).
authors.affiliation: Departamento de Matemáticas, Universidad de Oviedo, Calvo Sotelo, 33007 Oviedo, Spain.
authors.forename: Consuelo
authors.initials: C
authors.lastname: Martínez
authors.forename: Efim I
authors.initials: EI
authors.lastname: Zelmanov