Some problems for an equation of mixed type with two parabolic lines
1983 ◽
Vol 5
(1)
◽
pp. 346-355
1970 ◽
Vol 10
(5)
◽
pp. 155-164
Keyword(s):
2009 ◽
Vol 139
(1)
◽
pp. 123-155
◽
1998 ◽
Vol 150
(1)
◽
pp. 188-202
◽
Keyword(s):