24 citations · 68 across the 32 of their papers we have counts for
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math.CV2011★ 23 cited
Radius of Close-to-convexity of Harmonic Functions
David Kalaj, Saminathan Ponnusamy, Matti Vuorinen
Let denote the class of all normalized complex-valued harmonic functions in the unit disk , and let denote the harmonic Koeb…
math.CV2011★ 3 cited
Bi-Harmonic mappings and J. C. C. Nitsche type conjecture
David Kalaj, Saminathan Ponnusamy
In this note it is formulated the J. C. C. Nitsche type conjecture for bi-harmonic mappings. The conjecture has been motivated by the radial bi-harmonic mappings between annuli.