@misc{misc, title  = {{Families of Hopf algebras of trees and pre-Lie algebras}},

 url = {{}},

 year = {{2004}},

 month = {{2}},

 author = {{van der Laan P and Moerdijk I}},

 doi = {{10.48550/arxiv.math/0402022}},

 note = {{Accessed on 2025/10/10}}}