1. On generalized Euler functions and related totients;Alladi,1975
2. A note on the average order of the gcd-sum function;Bordellès;J. Integer Seq.,2007
3. Mean values of generalized gcd-sum and lcm-sum functions;Bordellès;J. Integer Seq.,2007
4. The composition of the gcd and certain arithmetic functions;Bordellès;J. Integer Seq.,2010
5. The gcd-sum function;Broughan;J. Integer Seq.,2001