[1]
V. Bang, M. M. Sharma, and G. A. Pope, “METHODS FOR IMPROVING THE PRODUCTIVITY OF OIL PRODUCING WELLS”, 12745405, 2011 [Online]. Available: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8261825.PN.&OS=PN/8261825&RS=PN/8261825