Thanks for the owner of this site for the opportunity to edit my webpage and to Lénárd Farczádi (my ex student) for critical observations.   Here I would like to thank many colleagues for sharing with me their views on what landscape is and how it should be appoached: Acad. Dr. Petru Bănărescu, Cosmin Moga, Dorel Ruşti, Dr. Dan Cogălniceanu, László Demeter, Kinga Öllerer, Dr. Oliver Schweiger, Dr. Ioan Fazey, Dr. Mike Christie, Dr. George Peterken, Dr. J. W. (Pim) Arntzen, Rainer Bartel and Dr. Brian Davis.