González, E., R. Jordano, M. C. López, M. G. Córdoba, and L. M. Medina. “ And Bacillus Licheniformis in Margarine With Yoghurt”. Grasas Y Aceites, vol. 49, no. 1, Feb. 1998, pp. 38-41, doi:10.3989/gya.1998.v49.i1.706.