2007
Lando - Lections about Generating Functions 3rd ed ru
    87ADDF730219410B3C63184513BEA31C
    3A5C5A545F48A21DF43A9F7DF6E17D11
    old - 2004
    3B2921174B00E1B709DB0F52721E1A8E
2006
Wilf - Generating Functionology 3rd ed
    52F1A9D608055304AD00419101DB88A5
    4373FE39A76C069D3168C2F8846A4874
    27E3A1652619762993FCE4D5D8FAC148
2004
Sachkov - Discrete Math Combinatorial Methods Introduction 2nd ed ru
    FA7BFD9424636C712D3D4A5E1888D7DA
    B97C8CA40117557156109E6B1CA64ABD
    1982 - 1st ed
    DA2ED8D182F58AD026BB2E1A663941C6
    41779A5577CDCFDD32E92F8050376AF5
    AB8EB0C43127F320DAC2390EE987F5C6
    2D852754D042AD2E7334A4D3913EC838
    9E35B16E527FDD8970A3780B010C14B5
    CB74219714C8247C9CDA32E944DBEAFB
    09D4D424489590C5D4CE34789B3E6DEA
    CA8FEEBD85B99DA9788A6E7FE6DDCF30
Anderson - Discrete Mathematics with Combinatorics 2nd ed
    ! need to check from time to time
    014318BF864B4C4E1689B55F3539FA8A
    7F68140B148CA73A7FC9BCB1BD568D35
    6A2AA43A98A858EFF454B94EFAB79E38
    ! huge num of pages ??? 1st ed
1966
Raizer - Combinatory Math ru
    http://mathscinet.ru/files/RyzerHJCombMath.pdf
    949971E0D58365349A8394D3AB4011CA
    666E7E753B661EBB43107ABAFF5D33A9
    08F1173871D1F97C89AF34EB68D9E3C9
????
Debrujin - Polya Enumeration Theory ru
    733CC56E417A162A41D5491A4E0CDAA1
    http://machinelearning.ru/wiki/images/6/6a/AA3-3(PET).pdf