@article{MALLOWS:1972:VEORPT:MR0314684,
   AUTHOR = {Mallows, C. L. and Wachter, K. W.},
    TITLE = {Valency enumeration of rooted plane trees},
  JOURNAL = {J. Austral. Math. Soc.},
 FJOURNAL = {Australian Mathematical Society. Journal. Series A. Pure
             Mathematics and Statistics},
     ISSN = {0263-6115},
   VOLUME = {13},
     YEAR = {1972},
    PAGES = {472--476},
  MRCLASS = {05C30 (05A15)},
MRREVIEWER = {R. W. Robinson},
 ZBLCLASS = {05C30;05C05;05A15},
       ID = {info:zbl/0238.05112, info:mr/MR0314684 (47 \#3235)},
   }