@Article{ RUIZ_PÉREZ:437-455,

author = { JUAN ELOY RUIZ CASTRO and RAFAEL PÉREZ OCÓN } ,

title = { A SEMI-MARKOV MODEL IN BIOMEDICAL STUDIES },

journal = { Communications in Statistics: Theory and Methods },

year = { 2004 },

volume = { 33 },

pages = { 437-455 },

}