de Biasi J
Biomathématiques, UFR de Mathématiques, Université Paul Sabatier, Toulouse, France.
J Biomed Eng. 1989 Nov;11(6):467-70. doi: 10.1016/0141-5425(89)90041-1.
A mathematical method is proposed to solve a fourth degree equation which gives the eigenvalues of the matrix connected with a four open compartment model used in pharmacokinetic studies. As examples, the method is applied to mammillary and catenary models.