Cite
APA Citation
Pshenichnyĭ, B. N. (. N. (2020). Necessary conditions for an extremum. Boca Raton : CRC Press. http://access.bl.uk/ark:/81055/vdc_100109223156.0x000001
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Pshenichnyĭ, B. N. (. N. (2020). Necessary conditions for an extremum. Boca Raton : CRC Press. http://access.bl.uk/ark:/81055/vdc_100109223156.0x000001