Spirin, O., L. Luparenko, and O. Novytskyi. 2017. “HE ROCEDURE F MPLEMENTATION F LECTRONIC CIENTIFIC OURNAL SING HE PEN OURNAL YSTEMS OFTWARE LATFORM”. ournal of nformation echnologies in ducation (ITE), no. 32 (September):040-060. https://doi.org/10.14308/ite000641.