✓

@book{book_973600,
    title = {Mathematical Logic: An Introduction to Model Theory},
    author = {A. H. Lightstone and H. B. Enderton},
    publisher = {Springer US},
    isbn = {978-1-4615-8752-1,978-1-4615-8750-7},
    year = {1978},
    series = {Mathematical Concepts and Methods in Science and Engineering 9},
    edition = {1},
    volume = {},
    url = {http://gen.lib.rus.ec/book/index.php?md5=300c7dbde5cd1f23365865b491ef7dd4},
    date-added = {2025-5-12 11:32:53 +0100}
}

@book{book_973600, title = {Mathematical Logic: An Introduction to Model Theory}, author = {A. H. Lightstone and H. B. Enderton}, publisher = {Springer US}, isbn = {978-1-4615-8752-1,978-1-4615-8750-7}, year = {1978}, series = {Mathematical Concepts and Methods in Science and Engineering 9}, edition = {1}, volume = {}, url = {http://gen.lib.rus.ec/book/index.php?md5=300c7dbde5cd1f23365865b491ef7dd4}, date-added = {2025-5-12 11:32:53 +0100} }