1. WHO Global Alert and Response (GAR) recommendations for influenza vaccine http://www.who.int/csr/disease/influenza/vaccinerecommendations/en/index.html.
2. Immune response to live influenza vaccine;Naĭkhin;Vestn Ross Akad Med Nauk,2002
3. WHO recommendations to assure the quality, safety, and efficacy of influenza vaccines (human, live attenuated) for intranasal administration http://www.who.int/biologicals/areas/vaccines/influenza/Influenza-vaccines-final-14MAY-2010.pdf.