Obregón

Gauge theory of the de Sitter group and the Ashtekar formulation.

Nieto, Socorro, Obregón, 1994, Physical review. D, Particles and fields.

Gauge theory of supergravity based only on a self-dual spin connection.

Nieto, Socorro, Obregón, 1996, Physical review letters.

Superfield description of the FRW universe.

Rosales, Tkach, Obregón, 1996, Physical review. D, Particles and fields.

Bianchi cosmologies: New variables and a hidden supersymmetry.

Ryan, Pullin, Obregón, 1993, Physical review. D, Particles and fields.

Supersymmetric quantum cosmology proposals and the Bianchi type-II model.

Socorro, Benítez, Obregón, 1993, Physical review. D, Particles and fields.

Supersymmetric microsuperspace quantization for the Taub model.

Socorro, Obregón, Macas, 1992, Physical Review D, Particles and fields.

No quantum superminisuperspace with Lambda

Capovilla, Obregón, 1994, Physical review. D, Particles and fields.