Journal article (2013) - Omar El Gawhary (author), O. El Gawhary (author), O. El El Gawhary (author), O Gawhary (author), O. El Gawhary (author), Omar Gawhary (author), O El Gawhary (author), O. Gawhary (author), A. Wiegmann (author), N Kumar (author), N. Kumar (author), SF Pereira (author), Silvania F. Pereira (author), S. F. Pereira (author), Silvania Pereira (author), S.F. Pereira (author), H. P. Urbach (author), H. Paul Urbach (author), Hendrik Paul Paul Urbach (author), H. Paul Urbach (author), HP Paul Urbach (author), Hendrik Paul Urbach (author), P. Paul Urbach (author), Paul Paul Urbach (author), H.P. Paul Urbach (author), H. P. Paul Urbach (author), HP Urbach (author), H. Paul Paul Urbach (author), Paul Urbach (author), P. Urbach (author), H.P. Urbach (author), H. Urbach (author)