Digital Signatures Out of Second-Preimage Resistant Hash Functions
Fractal Merkle Tree Representation and Traversal
Merkle Tree Traversal Revisited
Haraka - Efficient Short-Input Hashing for Post-Quantum Applications
SPHINCS: Practical Stateless Hash-Based Signatures
Cryptographic Hash-Function Basics: Definitions, Implications and Separations for Preimage Resistance, Second-Preimage Resistance, and Collision Resistance