Cite
MLA Citation
Shiping Lu et al.. “Periodic solutions for Liénard equation with an indefinite singularity.” Nonlinear analysis, vol. 45, 2019, pp. 542–556. http://access.bl.uk/ark:/81055/vdc_100068133291.0x00000b
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Shiping Lu et al.. “Periodic solutions for Liénard equation with an indefinite singularity.” Nonlinear analysis, vol. 45, 2019, pp. 542–556. http://access.bl.uk/ark:/81055/vdc_100068133291.0x00000b