[Radio Wrangler]

There were also articles by Jack Knight in Radcom
Then Wes Hayward's writings in his amateur radio design books.
Article by M Pochet in wireless world was rather short but gives a nice recipe pattern of shunt capacitors.
Then you're back inro Dishal and those working at Bell labs.

Oh, QEX is worth searching.

Finally, you can do a lot if you add parallel inductors to cancel the case capacitance of the crystal. Have a play on LT spice, it handles DIY crystal models rather well.

David