https://www.cairn-int.info/article-E_POPSOC_551_0001--why-has-fertility-been-increasing-in.htm#:~:text=The%20fertility%20increase%20observed%20in,their%20childr

https://www.cairn-int.info/article-E_POPSOC_551_0001--why-has-fertility-been-increasing-in.htm#:~:text=The%20fertility%20increase%20observed%20in,their%20children%20earlier%20in%20life https://www.cairn-int.info/article-E_POPSOC_551_0001--why-ha....