Gerardo SANCHEZ LICEA. Determining the Sufficiency in Optimal Control without the Strengthened Condition of Legendre. Recent Advances in Mathematical Research and Computer Science Vol. 4, [S. l.], p. 99–112, 2021. DOI: 10.9734/bpi/ramrcs/v4/2119E. Disponível em: https://stm.bookpi.org/RAMRCS-V4/article/view/4877. Acesso em: 20 jun. 2026.