 |
Kammeyer, Holger ntroduction to ℓ²-invariants Cham, Switzerland : Springer, 2019. viii, 181 p. -- (Lecture notes in mathematics ; vol. 2247) QA201 K35 |
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Kammeyer, Holger ntroduction to ℓ²-invariants Cham, Switzerland : Springer, 2019. viii, 181 p. -- (Lecture notes in mathematics ; vol. 2247) QA201 K35 |