Ordinary Non-Linear Differential Equations in Engineering and Physical Sciences
1952 ◽
Vol 58
(5)
◽
pp. 583-585
1951 ◽
Vol 55
(482)
◽
pp. 127-128
1957 ◽
Vol 61
(558)
◽
pp. 431-431
1951 ◽
Vol s1-26
(3)
◽
pp. 215-221
◽
1994 ◽
Vol 57
(2)
◽
pp. 138-148
◽