✦ LIBER ✦
Algebraic Conditions for a Centre or a Focus in Some Simple Systems of Arbitrary Degree
✍ Scribed by C.B. Collins
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 775 KB
- Volume
- 195
- Category
- Article
- ISSN
- 0022-247X
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