LINEAR DIFFERENTIAL EQUATIONS WITH PERIODIC COEFFICIENTS VOLS. 1 AND 2
1977 ◽
Vol 9
(2)
◽
pp. 233-234
1965 ◽
Vol 1
(2)
◽
pp. 206-221
◽
1968 ◽
Vol 19
(2)
◽
pp. 159-168
◽
2003 ◽
pp. 838-847
◽
1932 ◽
Vol s1-7
(4)
◽
pp. 263-265
1960 ◽
Vol 24
(4)
◽
pp. 877-902
◽
2008 ◽
Vol 199
(2)
◽
pp. 447-455
◽