@article{700563,
     title = {Functional movements in dendritic structures},
     booktitle = {General Topology and Its Relations to Modern Analysis and Algebra},
     series = {GDML\_Books},
     publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1971},
     pages = {319-327},
     mrnumber = {MR0279775},
     zbl = {0236.54007},
     url = {http://dml.mathdoc.fr/item/700563}
}

Whyburn, G. T. Functional movements in dendritic structures, dans General Topology and Its Relations to Modern Analysis and Algebra, GDML_Books,  (1971), pp. 319-327. http://gdmltest.u-ga.fr/item/700563/