Generalized circle- and ball-numbers:

• (2008). On l_2,p-circle numbers. Lithuanian Math. J., 48, 2, 228-234.
• (2008). On the Pi-function for nonconvex l_2,p-circle discs. Lithuanian Math. J., 48, 3, 332-338.
• (2009). Continuous l_n,p-symmetric distributions. Lithuanian Math. J., 49, 1, 93-108.