Kaping, S. et al. 2020. Ultrasound assisted synthesis of pyrazolo[1,5-a]pyrimidine-antipyrine hybrids and their anti-inflammatory and anti-cancer activities. European Journal of Chemistry. 11, 1 (Mar. 2020), 68–79. DOI:https://doi.org/10.5155/eurjchem.11.1.68-79.1942.