EchoVLA: Robotic Vision-Language-Action Model with Synergistic Declarative Memory for Mobile Manipulation. - Min Lin; Xiwen Liang; Bingqian Lin; Liu Jingzhi; Zijian Jiao; Kehan Li; Yuhan Ma; Yuecheng Liu; Shen Zhao; Yuzheng Zhuang; Xiaodan Liang (CoRR, 2025)