| 000 | 00617nam a2200229Ia 4500 | ||
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| 003 | OSt | ||
| 005 | 20220928141725.0 | ||
| 006 | a|||||r|||| 00| 0 | ||
| 007 | ta | ||
| 008 | 220927b |||||||| |||| 00| 0 eng d | ||
| 024 | _a17162 | ||
| 037 | _cTextual | ||
| 040 |
_aSDCL _cSDCL _beng |
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| 041 |
_2eng _aeng |
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| 082 | _aB334,1,2, L3 | ||
| 100 |
_aOleinik O A _9493213 |
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| 245 | 0 | _aSecond order equations with nonnegative characteristic form. | |
| 260 | _c1973 | ||
| 700 |
_a Radkevic E V _9501837 |
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| 942 |
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_c819485 _d819485 |
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