Search for grain growth toward the center of L1544 A. Chacón-Tanarro, P. Caselli, L. Bizzocchi, J. E. Pineda, J. Harju, M. Spaans and F.-X. Désert A&A, 606 (2017) A142 Published online: 26 October 2017 DOI: 10.1051/0004-6361/201630265