Shreemathi ADIGA. Biquadratic Equation with Four Unknowns. Novel Research Aspects in Mathematical and Computer Science Vol. 3, [S. l.], p. 131–140, 2022. DOI: 10.9734/bpi/nramcs/v3/2366B. Disponível em: https://stm.bookpi.org/NRAMCS-V3/article/view/6818. Acesso em: 4 jul. 2026.