ON FACE PARTITION OF ROOTED OUTERPLANAR MAPS
刘彦佩 · 中国科学通报：英文版 · 1989
A summation free formula for enumerating rooted nonseparable outerplanar maps with a face partition given is herein presented. As its corollaries, some summation free formulae for the bipartite and the simple cases are also derived. Moreover, the formula for planted plane trees according to a given vertex partition is demonstrated in a new way.