AlMarzouq, D. S., Zaky, O. S., AlNajjar, A. A., & Sadek, K. U. (2016). Pressure as effective green technology for synthesis of polyfunctionally substituted heteroaromatics: Synthesis of a variety of pyrazolo[1,5-a]pyrimidines. European Journal of Chemistry, 7(3), 347–351. https://doi.org/10.5155/eurjchem.7.3.347-351.1473