[BUC] BUCK R. C.: The measure theoretic approach to density. Amer. J. Math. 68 (1946), 560-580. MR 0018196 | Zbl 0061.07503

[HAR] HARDY G. H., WRIGHT E. M.: An Introduction to Theory of Numbers. (4th edition), Clarendon Press, Oxford, 1960.

[NOV] NOVOSELOV E. V.: Topologic theory of polyadic numbers. (Russian), Trudy Tbiliskogo Matem. Inst. 27 (1960), 61-69.

[OKU] OKUTSU K.: On the measure on the set of positive integers. Proc. Japan Acad. Ser. A 69 (1993), 173-174. MR 1232819 | Zbl 0805.11015

[PAS] PAŠTÉKA M.: Remarks on Buck's measure density. Tatra Mountains Math. Publ. 3 (1993), 191-201. Zbl 0813.11047

[PAS1] PAŠTÉKA M.: Some properties of Buck's measure density. Math. Slovaca 42 (1992), 15-32. MR 1159488 | Zbl 0761.11003

[PAS2] PAŠTÉKA M.: A note about the submeasures and Fermat last theorem. Ricerche di Matematica XLIII (1994), 79-90. MR 1324289 | Zbl 0921.11037

[SAL] ŠALÁT T.: On the function $a_p$, $p^{a_p(n)}\ \Vert\ n\ (n > 1)$. Math. Slovaca 44 (1994), 143-151. MR 1282531

[S-S] ŠALÁT T., SCHINZEL A.: Remarks on maximum and minimum exponents in factoring integers. Math. Slovaca 44 (1994), 505-514. MR 1338424