–http://www.ctf.sk/transform/murgas/murgas.htm

–http://astroportal.sk/historia/osobnosti.html

–http://www.telecom.gov.sk/externe/znamky/znamky.htm

–http://www.civil.gov.sk/CASOPIS/2001/1426mipr.html

–http://www.slovakopedia.com/s/stefan-banic.htm

–http://mineraly.sk/files/hist/009_mikoviny.htm

–http://www.osobnosti.sk/index.php?os=zivotopis&ID=58757

–http://www.suh.sk/kozm0104f/hellova_venusa.htm