Analysis of information sources in references of the Wikipedia article "The Day of the Triffids" in English language version.
Another writer that I knew very well was John Benyon Harris, better known as John Wyndham, whose 1951 The Day of the Triffids seems an immortal story. It's often being revived in some form or another. John was a very nice guy, but unfortunately suffered from an almost fatal defect for a fiction writer: he had a private income. If he hadn't, I'm sure he'd have written much more.