◂
sci
hub

to open science
Pan, Huang Hsing; Wang, Chi-Kuei; Tia, Mang; Su, Yu-Min . (2020). Influence of water-to-cement ratio on piezoelectric properties of cement-based composites containing PZT particles. Construction and Building Materials, 239(), 117858–. doi:10.1016/j.conbuildmat.2019.117858 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research