, Volume 88, Issue 2, pp 114-115

To the memory of V. N. Popov

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access
Translated fromZapiski Nauchnykh Seminarov POMI, Vol. 224, 1995, pp. 10–13.
Translated by O. Yu. Podkopaeva.