@article{article,
title = {Changes in neural and lens competence in Xenopus ectoderm: evidence for an autonomous developmental timer},
author = {},
year = {1991},
journal = {Development},
volume = {112},
number = {1},
pages = {177-188},
howpublished = "\url{https://eurekamag.com/research/007/093/007093196.php}"
}