A dual extremum principle for a population equation
1974 ◽
Vol 13
(4)
◽
pp. 490-492
2019 ◽
Vol 130
◽
pp. 722-732
◽
1999 ◽
Vol 5
(3)
◽
pp. 663-683
◽
1966 ◽
Vol 14
(3)
◽
pp. 446-452
◽
Keyword(s):
1997 ◽
Vol 59
(6)
◽
pp. 1145-1154
◽
Keyword(s):