Mutual aid ↓save

Janocha, Daniel; Wacławczyk, Marta; Oberlack, Martin . (2015). Lie Symmetry Analysis of the Hopf Functional-Differential Equation. Symmetry, 7(3), 1536–1566. doi:10.3390/sym7031536 

An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research