Superstring theory is an attempt to explain all of the particles and fundamental forces of nature in one theory by modelling them as vibrations of tiny supersymmetric strings. Superstring theory is a shorthand for supersymmetric string theory because unlike bosonic string theory, it is the version of string theory that incorporates fermions and supersymmetry.

Superstring theory
Superstring Theory
Superstring Theory
Anomaly cancellations in supersymmetric D = 10 gauge theory and superstring theory ☆
Anomaly cancellations in supersymmetric D = 10 gauge theory and superstring theory ☆
String theory. Volume II: Superstring theory and beyond
A new maximally supersymmetric background of IIB superstring theory
Superstring theory and beyond
Superstring Theory in 2 vols
Black Hole Entropy in Canonical Quantum Gravity and Superstring Theory
Superstring theory ☆
Superstring Theory. Vol.1
Vector field effective action in the open superstring theory