no. 1
Prescribed ultrametrics
RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 27 (1993) no. 1, pp. 1-5. 
@article{ITA_1993__27_1_1_0,
     author = {Higgins, J. and Campbell, D.},
     title = {Prescribed ultrametrics},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {1--5},
     publisher = {EDP-Sciences},
     volume = {27},
     number = {1},
     year = {1993},
     mrnumber = {1213417},
     zbl = {0786.54031},
     language = {en},
     url = {http://archive.numdam.org/item/ITA_1993__27_1_1_0/}
}
TY  - JOUR
AU  - Higgins, J.
AU  - Campbell, D.
TI  - Prescribed ultrametrics
JO  - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
PY  - 1993
SP  - 1
EP  - 5
VL  - 27
IS  - 1
PB  - EDP-Sciences
UR  - http://archive.numdam.org/item/ITA_1993__27_1_1_0/
LA  - en
ID  - ITA_1993__27_1_1_0
ER  - 
%0 Journal Article
%A Higgins, J.
%A Campbell, D.
%T Prescribed ultrametrics
%J RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
%D 1993
%P 1-5
%V 27
%N 1
%I EDP-Sciences
%U http://archive.numdam.org/item/ITA_1993__27_1_1_0/
%G en
%F ITA_1993__27_1_1_0
Higgins, J.; Campbell, D. Prescribed ultrametrics. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 27 (1993) no. 1, pp. 1-5. http://archive.numdam.org/item/ITA_1993__27_1_1_0/

1. M. Aschbacher P. Baldi, E. Baum and R. Wilson, Embeddings of ultrametric Spaces in Finite Dimensional Structures, S.I.A.M. J. Algebra Disc. Math., 1987, 8, pp. 564-587. | MR | Zbl

2. V. Z. Feinberg, Finite Ultrametric Spaces, Dokl. Akad. Nauk S.S.S.R., 1972, 202, pp. 775-778. | MR | Zbl

3. M. Krv'Anek, The Complexity of Ultrametric Partitions on Graphs, Inform. Process. Lett., 1988, pp. 265-270. | MR | Zbl

4. N. Parga and M. Virasoro, The Ultrametric Organization of Memories in A Neural Network, J. Physique, 1986, 47, pp. 1857-1864. | MR

5. A. C. M. Van Rouij, Non Archimedean Functional Analysis, Marcel Dekker, New York, 1978. | MR | Zbl