def sigma_Bird_Stewart_Lightfoot_boiling(Vb):
Vb = Vb*<NUM_LIT><EOL>sigma = <NUM_LIT>*Vb**(<NUM_LIT:1>/<NUM_LIT>)<EOL>return sigma<EOL>
r'''Calculates Lennard-Jones molecular diameter.
    Uses molar volume of liquid at boiling. CSP method by [1]_.

    .. math::
        \sigma = 1.166V_{b,liq}^{1/3}

    Parameters
    ----------
    Vb : float
        Boiling molar volume of liquid [m^3/mol]

    Returns
    -------
    sigma : float
        Lennard-Jones collision integral, [Angstrom]

    Notes
    -----
    Original units of Vb are mL/mol.

    Examples
    --------
    >>> sigma_Bird_Stewart_Lightfoot_boiling(0.0001015)
    5.439018856944655

    References
    ----------
    .. [1] Bird, R. Byron, Warren E. Stewart, and Edwin N. Lightfoot.
       Transport Phenomena, Revised 2nd Edition. New York:
       John Wiley & Sons, Inc., 2006