https://groups.google.com/d/topic/alt.usage.english/yz7pmJx6_sA/discussion
https://groups.google.com/d/topic/alt.usage.english/pMnfkfG5V68/discussion
https://groups.google.com/d/topic/alt.usage.english/qZ4AitiXK9s/discussion
--> Donna's posts
(not very informative ...)
https://groups.google.com/d/topic/alt.usage.english/pPMhEHSBNOM/discussion
https://groups.google.com/d/topic/alt.usage.english/veGsa7QLco8/discussion
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The American Heritage Book of English Usage
if-clauses -- the traditional rules
if-clauses -- the reality
subjunctive after wish
....
https://books.google.com/books?id=BEHFyMCdwssC&lpg=PA38&dq=subjunctive%20%22would%20have%20to%22&pg=PA38#v=onepage&q=subjunctive%20%22would%20have%20to%22&f=false
