TY  - JOUR
AU  - Yu. M. Voloshin
TI  - ``Up-down'' sequences and ordered trees
JO  - Doklady Akademii Nauk
PY  - 1993
SP  - 125
EP  - 127
VL  - 329
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1993_329_2_a2/
LA  - ru
ID  - DAN_1993_329_2_a2
ER  -