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Special issue: dedicated to the memory of Professor P. D. Panagiotopoulos
Staurulakēs, Geōrgios E., (2000)
A method of truncated codifferential with application to some problems of cluster analysis
Demyanov, V.F., (2002)
Conditions for an Extremum in Metric Spaces
Demyanov, V.F., (2000)