Prabhakar R. Hampiholi, Jotiba P. Kitturkar, On Enumeration of some Non-Isomorphic Dendroids, BMSA Volume 18, Bulletin of Mathematical Sciences and Applications (Volume 18)
    A dendroid is a connected semigraph without a strong cycle. In this paper, we obtain the various results on the enumeration of the non-isomorphic dendroids containing two edges and the dendroids with three edges.
    Enumeration of Dendroids with Three Edges, Enumeration of Dendroids with Two Edges, Semigraph