@article{Ramírez-Torres:151650,
      author        = "Ramírez-Torres, Erick E. and Selva Castañeda, Antonio R.
                       and Rández, Luis and Sisson, Scott A. and Cabrales, Luis
                       E. Bergues and Montijano, Juan I.",
      title         = "{Proper likelihood functions for parameter estimation in
                       S-shaped models of unperturbed tumor growth}",
      year          = "2025",
}