参考文献

Sathe, Dhananjay Govind; Damle, Subhash Vishwanath; Arote, Nitin Dnyaneshwar; Ambre, Rakesh Ramchandra; Want, Kamlesh Digambar; Naik, Tushar Anil Patent: US2013/158265 A1, 2013 ; Location in patent: Paragraph 0161; 0162; 0163; 0164 ;