SHAFI, S.; CHAND, A.; NAWAZ, M.; PARVEEN, R.; MUNAWAR, S.; ISHFAQ, M.; SHEIKH, M.; MARYAM, A.; SALEEM, T. Facile Synthesis of 5,6,7,8-tetrahydropyrimido[4,5-d] pyrimidine-2,4 (1H,3H) -dione Analogs via One Pot Multicomponent Reaction . FRONTIERS IN CHEMICAL SCIENCES, v. 1, n. 1, p. 1-7, 30 Jun. 2020.