Necessary and sufficient conditions for optimally for singular control problems; a transformation approach
1971 ◽
Vol 33
(1)
◽
pp. 163-187
◽
1971 ◽
Vol 34
(2)
◽
pp. 239-266
◽
2010 ◽
Vol 54
(4)
◽
pp. 553-570
◽
2001 ◽
Vol 54
(3)
◽
pp. 425-438
◽
1986 ◽
Vol 23
(04)
◽
pp. 851-858
◽