e - LINKS
A)
General
http://www.sciencearea.com.ua/
http://www.emis.de/journals/ZAA/
http://www.wiley-vch.de/publish/en/journals/
http://www.ingenta.com/journals/
http://scholar.google.es/schhp?hl=en
http://www.timeshighereducation.co.uk/world-university-rankings/2011-12/world-ranking
http://www.topuniversities.com/
http://excellence.minedu.gov.gr/
http://www.scopus.com/;jsessionid=DE98CCB93500BE7FEA16D8306CB69AF7.mw4ft95QGjz1tIFG9A1uw
B)
Differential Equations
http://tutorial.math.lamar.edu/Classes/DE/DE.aspx
http://www.sosmath.com/diffeq/diffeq.html
http://en.wikibooks.org/wiki/Ordinary_Differential_Equations
http://eqworld.ipmnet.ru/en/solutions/ode.htm
C) Differential Equations
& Mathematical Modeling
http://www3.ul.ie/tilde_accs/mlc/www/support/Loughborough%20website/chap19/19_1.pdf
http://www.webcrawler.com/info.wbcrwl.305.01/search/web?q=differential+equation+models&cid=
http://scholar.google.gr/scholar?q=differential+equations+modelling+examples&hl=el&as_sdt=0&as_vis=
1&oi=scholart&sa=X&ei=LX6gUsviDevMygO1zoCACQ&ved=0CC0QgQMwAA
http://www.math.ucsd.edu/~math20d/Fall/LabA1/LabA1.html