ok,there is a link about comment of this opera.http://scholar.google.es/scholar_case?case=15805207691329887629&q=comment+the+phantom+of+the+opera&hl=en&as_sdt=2,5
Another link is about the music writer Andrew Webber.http://scholar.google.es/scholar_case?case=2943110715761042311&q=comment+the+phantom+of+the+opera&hl=en&as_sdt=2,5
Link a book.About The undergrounds of the phantom of the opera.http://books.google.es/books?hl=en&lr=&id=sjmtw6y0KIAC&oi=fnd&pg=PR9&dq=book+the+phantom+of+the+opera&ots=wRdwfPOdB4&sig=E-UFgJxvJ5f6X7PZLRXyNgj6sOM#v=onepage&q=book%20the%20phantom%20of%20the%20opera&f=false
Ippolito's book "Pensions economics and public policy "http://books.google.es/books?id=NmT67TUtus0C&pg=PR11&dq=ippolito's+book&hl=zh-CN&ei=gsjDTv-GNcqLswbh6ZDPCw&sa=X&oi=book_result&ct=result&resnum=3&ved=0CDUQ6AEwAg#v=onepage&q=ippolito's%20book&f=false
U know What is RSS?
Let's go with google!Ok, I bet it that everyone know what's google. but do you know what's google tools? And During your education have you used one of google tools? And today how do teacher use google tools in class?
Widely, we often use gmail to contact with students, teacher.Then,google scholar is a wonderful searching engine.The third one is google reader.You can read books online.if you don't finish reading, you can save the book in the google reader and one amazing thing is google reader like a bookmark.And so on.
I have to say that google tools is the greatest progress in the 21st century in human history.They are used for education. They are fast,easy,and free.They have a good capability of information-gathering. google tools are convenient for education.