ESTONIAN ACADEMY
PUBLISHERS
eesti teaduste
akadeemia kirjastus
cover
Proceedings of the Academy of Sciences of the Estonian SSR. Physics. Mathematics
ОБ ОБОБЩЕННЫХ РАЗДЕЛЕННЫХ РАЗНОСТЯХ. II; pp. 146–156
PDF | https://doi.org/10.3176/phys.math.1967.2.05

Author
Sulev Ulm
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