参考文献
Padi, Pratap Reddy; Bollikonda, Satyanarayana; Jasty, Ananda Mohan; Tamma, Ranga Reddy; Mohanarangam, Saravanan; Yasareni, Sumalatha; Rupakala, Gowri Shanker; Debasish, Ghosh
Patent: US2007/27180 A1, 2007 ;
Location in patent: Page/Page column title page; sheet 1; 6 ;