Citation: H. Bühlmann, et H. Gerber, U., General jump process and time change — or, how to define stochastic operational time, Scandinavian actuarial journal , 1978(2), 1978, pp. 102-107
Citation: H. Gerber, U. et M. Goovaerts, J., On the representation of additive principles of premium calculation, Scandinavian actuarial journal , 1981(4), 1981, pp. 221-227