Robuta

https://www.agilent.com/store/en_US/Prod-G6578-00502/G6578-00502 G6578-00502 | Agilent 00502agilent https://arxiv.org/abs/1704.00502 [1704.00502] Weak approximation results for quadratic forms in four variables Abstract page for arXiv paper 1704.00502: Weak approximation results for quadratic forms in four variables weak approximationquadratic formsin four170400502