Precisely correct answers were received by closing date from:
Carlos CAPPARÔS-ESCUDERO, Sevilla, Spain
N. CHIDAMBARANATHAN, Chennai, India
Marc De BAETS, Lugano, Switzerland
Kemal DEMIR, Istanbul, Turkey
Thaworn DENDUMRONGSUP, Songkla, Thailand
Jose C. GALLEGO, Ferrol, Spain
N.B.S. MANI, Miami, Florida, USA
Vassilios MANIATIS, Palini, Greece
Ram PRAKASH GALWA, Chandigarh, India
Annemie SNOECKX, Zandhoven, Belgium
Panagiotis TSIRKINIDIS, Athens, Greece
Meric TUZUN, Ankara, Turkey
Ercument UNLU, Edirne, Turkey