Egorov, V. G. et al
9 papers on differential equations - American Mathematical Society Providence 1963 - 307 - American Mathematical Society translations ; ser. 02, 00024 .
B J6.1-J6.72
51(06) AME
9 papers on differential equations - American Mathematical Society Providence 1963 - 307 - American Mathematical Society translations ; ser. 02, 00024 .
B J6.1-J6.72
51(06) AME