diff --git a/README.adoc b/README.adoc
index d127fde..22255da 100644
--- a/README.adoc
+++ b/README.adoc
@@ -22322,9 +22322,12 @@ This is analogous to <<baremetal-gdb-step-debug,step debugging baremetal example
 
 Related:
 
-* https://electronics.stackexchange.com/questions/258896/what-happens-before-main
-* https://electronics.stackexchange.com/questions/55767/who-receives-the-value-returned-by-main
+* https://stackoverflow.com/questions/4783404/is-main-really-start-of-a-c-program/64116561#64116561 "Is main() really start of a C++ program?"
+* https://electronics.stackexchange.com/questions/258896/what-happens-before-main/404298#404298
+* https://electronics.stackexchange.com/questions/55767/who-receives-the-value-returned-by-main[], more microcontroller focused, should entitled "how to quit a program in microcontroller"
 * https://stackoverflow.com/questions/53570678/what-happens-before-main-in-c "What happens before main in C++?"
+* https://www.quora.com/What-is-happening-before-the-main-function-is-called-in-C++-programming
+* https://stackoverflow.com/questions/2053029/how-exactly-does-attribute-constructor-work
 
 ===== nostartfiles programs