id: 70970211
dt: a
an: 70970211
au: Valdes, Jacobo; Tarjan, Robert Endre; Lawler, Eugene L.
ti: The recognition of series parallel digraphs
so: STOC, 1-12 (1979).
py: 1979
pu: 
la: EN
cc: 
ut: 
ci: 
li: doi:10.1145/800135.804393