update title & correct author names

[Gruia]

Please complete the entry for this book:

Title (with diacritics): Analiză Matematică
Number of pages: 494
Publisher: Editura Didactică și Pedagogică
Binding: Hardcover
Cover: http://tinypic.com/r/11ghdw4/9

Modify the name of the second author to: Vasile V. Tănase
Make sure it stays disentangled from the author of this book:
https://www.goodreads.com/book/show/2...

Also reset the author name of ISBN 9789736454509 to its proper spelling: Vasile Tănase

[Sandra]

Done

[Gruia]

Thank you Sandra!