On a Certain Completely Integrable System of Linear Partial Differential Equations
1916 ◽
Vol 17
(4)
◽
pp. 483-483
◽
1958 ◽
Vol 11
(1)
◽
pp. 145-151
◽
1961 ◽
Vol 14
(3)
◽
pp. 171-186
◽
1994 ◽
Vol 2
(1)
◽