* [[http://www.emedicinehealth.com/snakebite/page8_em.htm#Prevention Snakebite]]* [[http://www.altiusdirectory.com/Health/first-aid-tips.php First aid tips]]* [[http://peperonity.com/go/sites/mview/kigyok1/18698523 Kígyók]]* [[http://www.sulinet.hu/eletestudomany/archiv/1999/9947/vipera/viperkve.htm A viperák éve]]