层 (数学)applications) de Cataldo, Andrea Mark; Migliorini, Luca. What is a perverse sheaf? (PDF). Notices of the American Mathematical Society. 2010, 57 (5):
數學研究生教材ISBN 978-1-4612-8476-5) Matrix Analysis, Rajendra Bhatia (1997, ISBN 978-0-387-94846-1) Sheaf Theory, Glen E. Bredon (1997, 2nd ed., ISBN 978-0-387-94905-5) Riemannian