A Residuated Lattice of L-Fuzzy Subalgebras of a Mono-Unary Algebra. - S. V. Tchoffo Foka; Marcel Tonga (New Math. Nat. Comput., 2019)

A note on the algebraicity of L-fuzzy subalgebras in universal algebra. - S. V. Tchoffo Foka; Marcel Tonga (Soft Comput., 2020)

Residuated lattice of L-fuzzy ideals of a ring. - S. V. Tchoffo Foka; Marcel Tonga (Soft Comput., 2020)

Rings and residuated lattices whose fuzzy ideals form a Boolean algebra. - S. V. Tchoffo Foka; Marcel Tonga (Soft Comput., 2022)

Left and Right Orthogonal in Fuzzy Spaces. - S. V. Tchoffo Foka (New Math. Nat. Comput., 2024)