Mutual aid ↓save

LOPATIN, V.E.; VASILIEV, M.A. . (1988). FREE MASSLESS BOSONIC FIELDS OF ARBITRARY SPIN IN D-DIMENSIONAL DE SITTER SPACE. Modern Physics Letters A, 3(3), 257–270. doi:10.1142/S0217732388000313 

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