TY  - JOUR
AU  - P. van Albada
TI  - Problems of order with respect to tetrahedral sextuples
JO  - Colloquium Mathematicum
PY  - 1962
SP  - 251
EP  - 264
VL  - 9
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-9-2-251-264/
DO  - 10.4064/cm-9-2-251-264
LA  - en
ID  - 10_4064_cm_9_2_251_264
ER  -