✓

@book{book_56963,
    title = {Fundamentals of Differential Geometry},
    author = {Serge Lang},
    publisher = {Springer-Verlag New York},
    isbn = {038798593X,9780387985930},
    year = {1999},
    series = {Graduate Texts in Mathematics 191},
    edition = {1},
    volume = {},
    url = {http://gen.lib.rus.ec/book/index.php?md5=324fc33a8b039776aea82143a445faf9},
    date-added = {2024-1-22 15:31:43 +0100}
}

@book{book_56963, title = {Fundamentals of Differential Geometry}, author = {Serge Lang}, publisher = {Springer-Verlag New York}, isbn = {038798593X,9780387985930}, year = {1999}, series = {Graduate Texts in Mathematics 191}, edition = {1}, volume = {}, url = {http://gen.lib.rus.ec/book/index.php?md5=324fc33a8b039776aea82143a445faf9}, date-added = {2024-1-22 15:31:43 +0100} }