C. Henry Edwards and David E. Penney, Differential equations and linear alge-
bra, 3rd ed., Prentice Hall, 2008.
 Stewart N. Ethier and Thomas G. Kurtz, Markov processes: Characterization
and convergence, John Wiley & Sons, New York, 1986.
 William Feller, An Introduction to Probability Theory and its Applications, vol. 1,
John Wiley & Sons, 1968.
 D. T. Gillespie, A general method for numerically simulating the stochastic time
evolution of coupled chemical reactions, J. Comput. Phys. 22 (1976), 403434.
 , Exact stochastic simulation of coupled chemical reactions, J. Phys.
Chem. 81 (1977), no. 25, 23402361.
 Thomas G. Kurtz, Representations of Markov processes as multparameter time
changes, Ann. Prob. 8 (1980), no. 4, 682715.
 , Approximation of population processes, CBMS-NSF Reg. Conf. Series in
Appl. Math.: 36, SIAM, 1981.
 Gregory F. Lawler, Introduction to stochastic processes, 2nd ed., Chapman &
hall, Baco Raton, FL, 2006.
 Lawrence Perko, Differential equations and dynamical systems, 3rd ed., Springer-
 Sidney I. Resnick, Adventures in stochastic processes, 1st ed., Birkh¨auser, 1992.